after stating the case. The defendant insisted that it was entitled to rely upon its counter-claim in bar of any recovery by the plaintiff and that the issue should be, “Is the defendant indebted to the plaintiff, and if so, in what sum?” and also, that there should be issues on the counter-claim as to the surplus. We do not think the defendant has pleaded the matters set forth in the counterclaim strictly in defense as a bar to the plaintiff’s recovery, and the Court so held. The counter-claim would of course have operated as a bar if the jury had found that defendant’s damages for the breach of the contract hy the plaintiff equalled or exceeded the amount of the plaintiff’s claim, and in that event it would have been a bar in fact, though not *577in law, that is, it would not have been a bar within the technical meaning of that word. The Court held at the outset, and “at the request of the defendant” as the Court recalled, “and certainly without objection by the defendant to the ruling,” that the burden of proof was on the defendant. If the defendant’s present contention as to the proper issues and as to the state of the pleadings is correct, and the plaintiff was required to show performance of the contract' on its part before it could recover, the burden was on the plaintiff and not on the defendant, as ruled by the Court. We understand from the record, and by that we must be governed, the defendant insisted at the trial that upon the answer as drawn the issues should be so framed as to require the jury in response to the fourth issue to assess the defendant’s damages in excess of the amount due the plaintiff for the February and March deliveries. While the form of the answer did not entitle the defendant to such an issue, we-think the issues as framed enabled the defendant by a proper prayer for instructions to present this view to the jury, and it is not required that issues should be submitted in any particular form, provided the parties have the opportunity of presenting their case fully to the jury upon the law and the evidence applicable thereto. Patterson v. Mills, 121 N. C., 258. We have been unable to perceive what legal or practical difference there is between assessing the full amount of damages under the fourth issue, as was done in this case, and confining the assessment to the excess of damages or the difference between the plaintiff’s claim and the full amount of the defendant’s damages. The usual and the better practice is that which was adopted by the Court, and under the clear and explicit instructions to the jury we do not see how they could possibly have been misled as to the time nature of the controversy. The plaintiff, as we will show hereafter, was entitled to recover the value of the coal *578sold and delivered to the defendant, or the price agreed to be paid therefor, which in this case are the same in amount, and the defendant was entitled to have assessed by the jury the full amount of the damages arising out of the breach of the contract by the plaintiff, if any, and the difference between these two amounts, whether in favor of the plaintiff or the defendants, is of course the amount of the judgment to be rendered against the party recovering the smaller sum. There is no error in this ruling of the Court.
It was contended in the argument before us by the defendant’s counsel that, as the jury had found there was a breach of the contract by the plaintiff its right to recover anything is wholly barred, and we were asked, “Can one who has wrongfully refused to do what he contracted to do recover for a part performance?” Our answer to this question is that, under the circumstances of this case, he can. In the first place, this is not an entire contract. The shipments made in any one month were to be paid for in the next succeeding month and the price per ton of the coal was fixed. It appears from the testimony that the breach, of the contract, or the failure to make deliveries under it, upon orders from the defendant, occurred prior to February. Mr. Collins who was the president and manager of the defendant company and a witness for it, testified that between September 20th to February and March the defendant ordered and the plaintiff failed to deliver about 807.cars of coal. The case shows that it is not meant by this testimony that there was any failure to deliver in February and March, and, even if that had been the case, we do not think it would make any material difference in the view we take of the law. It would be manifestly unjust, treating the contract as divisible, to permit the defendants to receive and use the coal delivered in February and March and refuse to pay for it, merely because the plaintiff had failed to fill orders for any *579one or more of tbe preceding months, and especially so when the defendant at the time he received the coal in February and March well knew of the prior breaches. Tipton v. Feitner, 20 N. Y., 423; Ming v. Corbin, 142 N. Y., 334. We will go further and declare the law to be that if the breach by the plaintiff had occurred in the same month when the coal for the price of which this action is brought was delivered, the defendant could not defeat a recovery by the plaintiff, provided he received the coal and had the full benefit of it. Where the agreements go to the whole of the consideration on both sides the promises are dependent, and one of them is a condition precedent to the other, and full performance is required before there can be any recovery, as in the case of Lawing v. Rintles, 97 N. C., 350; but this rule does not apply if, for instance, work has not been done or materials furnished in strict accordance with the contract, provided one of the parties has received and enjoyed any benefit from the contract, and certainly not unless full performance is made a condition precedent to payment. The law implies a promise by the party to pay for what has been thus received, and allows him to recover any damages he has sustained by reason of the breach, for this is exact justice. The language of the Court in Britton v. Turner, 6 N. H., 492, 26 Am. Dec., 713, seems to fit this case: “If, where a contract is made of such a character, a party actually receives labor or materials, and thereby derives a benefit and advantage over and above the damage which has resulted from the breach of the contract by the other party, the labor actually done and the value received furnish a new consideration, and the law thereupon raises a promise to pay to the extent of the reasonable worth of such excess. This may be considered as making a new case, one not within the original agreement, and the party is entitled to ‘recover on his new *580case’ for the work done, not as agreed, but yet accepted by the defendant.”
In McClay v. Hedge, 18 Iowa, 66, the Court, by Dillon, J., referring to Britton v. Turner, says: “That celebrated case has been criticised, doubted, and denied to be sound, yet its principles have been gradually winning their way into professional and judicial favor. It is bottomed on justice and is right upon principle, however it may be upon the technical and more illiberal rules as found in the older cases.” And the same Court, in Wolf v. Gerr, 43 Iowa, 339, states it to be the settled doctrine “that a party who has failed to perform in full his contract, may recover compensation for the part performed, less the damages occasioned by his failure.” This principle is fully sanctioned by the authorities. Chamblee v. Baker, 95 N. C., 98; Simpson v. Railroad, 112 N. C., 703; Gorman v. Bellamy, 82 N. C., 496. In the case last cited this Court said: “The inclination of the Courts is to relax the stringent rules of the common law, which allows no recovery upon a special unperformed contract itself, nor for the value of the work done, because the special excludes an implied contract to pay. In such a case if the party has derived any benefit from the labor done, it would be unjust to allow him to retain that without paying anything. The' law therefore implies a promise to pay such remuneration as the benefit conferred is really worth.” The Court also said in Brown v. Morris, 83 N. C., at p. 257: “If there had been delivered a smaller number of bricks, and they had been received and used by the defendant without objection, we see no reason why the plaintiff would not be entitled to compensation for such as* wrere delivered; and we are not disposed to carry the doctrine that a partial delivery under an agreement to deliver a definite quantity or number of goods leaves the purchaser the possession and use of such as are delivered without liability *581to the seller, beyond the decided cases, and as operating only when the failure to deliver is wilful and without legal excuse.” Monroe v. Phelps, 8 El. & B., 739; Reade v. Rann, 10 B. & C., 438; Leonard v. Dyer, 26 Conn., 172, 68 Am. Dec., 382; Horne v. Batchelder, 41 N. H., 86; Bush v. Jones, 2 Tenn., 190; Duncan v. Baker, 21 Kan., 99; Lamb v. Brolaski, 38 Mo. App., 51; Myer v. Wheeler, 65 Iowa, 390; Hansen v: C. S. H. Co., 73 Iowa, 77; M. L. Co. v. Coal Co., 160 Ill., 85, 31 L. R. A., 529.
The doctrine is well stated and supported by the citation of numerous authorities in 9 Cyc. of Law and Pro., pp. 6S6 and 687, note 15.
The defendant excepted to an instruction in regard to the date of the contract, but we can not see how the date is material, as the parties, according to the very terms of the contract, agreed that shipments should be made from September 1, 1898, and this is the construction placed upon the contract by defendant in its first prayer for instructions.
The remaining exceptions relate to the Judge’s charge upon the counter-claim and especially to the measaxre of damages. The defendant contended that the plaintiff was bound to supply it with coal under the contract, unless prevented from doing so by strikes or other causes beyond the plaintiff’s control, even though it had other customers.at the time who had entered into similar contracts with the plaintiff, and that this is so, because the defendant had shown by the testimony that the plaintiff had represented, when the contract with the defendant was made, that it had no other outstanding contract and would make no other. It is sufficient to say, in regard to this matter, that it was fairly submitted to the jury and found against the defendant, or the latter had at least the full benefit of the point under the charge of the Court. But it becomes immaterial, in the view we take of the ease, as will appear hereafter. The *582Court charged the jury, substantially, that, if the plaintiff failed to ship the coal to the defendant upon its orders according to its agreement and was not prevented from doing» so by strikes or other causes beyond its control, and which it could not have avoided by the exercise of ordinary care, it would be liable to the defendant for such damages as the latter sustained by reason of the breach, and that if at the time the plaintiff had other customers similarly situated with the defendant in respect to contracts with the plaintiff of the same character, and the plaintiff by reason of causes beyond its control could not fully supply all, the latter had the right, and it was its duty under the law, to apportion its shipments pro rata among its said customers, provided it did so in good faith and with perfect fairness to each, and provided it had not represented that there were no contracts other than the defendants’ and had not agreed that it would make no other contract. If, in fact, there were no other contracts, then this instruction would not apply, and plaintiff would be liable in damages, unless the jury found under the charge of the Court that the plaintiff was protected by the clause of dispensation in regard to strikes and other causes beyond the plaintiff’s control. The plaintiffs say that this instruction is sustained by the cases in which it has been held that railroad companies should not discriminate against any of its customers in the transportation of freight. It is true it has been held that it is no proper business of a railroad company, as a common carrier, to foster particular enterprises or to build up new industries; but deriving as it does its franchises from the Legislature and depending upon the will of the people for its very existence, it is bound to deal fairly with the public and to provide reasonable facilities for transportation of persons and property and, in this respect, to put all its patrons upon an absolute equality. Railroad v. Goodridge, 149 U. S., *583680; U. S. v. Railroad, 109 Fed. Rep., 831. In tbe latter case it is beld that while the capacity of a shipper of coal may be greater than his allotment of cars, yet when sncli is also the case with every other operator similarly situated in the coal field, it is the duty of the railroad company when the supply of coal cars is short to prorate the supply on hand, without unjust discrimination, among all the operators, including the shipper in question. 4 Elliott on Railroads, section 1468, et seq.; Root v. Railroad, 114 N. Y., 300, 4 L. R. A., 321, 11 Am. St. Rep., 643. But those cases were decided under the provisions of the Interstate Commerce Act and upon the principles of the common law forbidding discrimination, and the doctrine is confined to cases where the party from whom the particular duty is owing is a common carrier, or is operating under a public franchise which imposes upon it certain obligations and responsibilities with respect to the public and to those who deal with it in its capacity as a quasi public corporation. We are unable to see that they have any application to the facts of this case, nor did the learned counsel refer us to any authority for the principle upon which the Court directed the jury to assess the defendant’s damages, nor have we been able to find any. The question therefore must be decided according to the ordinary rule in the law of contracts. It is a well-settled principle of law that if a party by his contract charges himself with an obligation possible to be performed, he must make it good, unless its performance is rendered impossible by the act of God, the law or the other party. Unforeseen difficulties, however great, will not excuse him. The law regards the sanctity of contracts and requires parties to do what they have agreed to do. If unexpected impediments lie in the way, and a loss must ensue, it leaves the loss where the contract places it. If the parties have no provision for a dispensation, the rule of law gives *584none. It does not allow a contract fairly made to be annulled, and it does not permit to be interpolated wliat the parties have not stipulated. Ingle v. Jones, 2 Wall., 1. The Courts will not make an agreement for the parties, but will ascertain what they have agreed by what they have said and by the meaning of the words used to express their intention. Where the intention clearly appears from the words used, there is no need to go further, for in such a ease the words must govern; or, as it is sometimes said, where there is no doubt there is no room for construction. Clark on Contracts, p. 591. We must assume that the parties have fully and clearly expressed their agreement in the instrument which is the evidence of it, and to add to or take from it by construction, would, under the circumstances, be the same as if we should arbitrarily give to it a meaning they did not intend it should have. We must therefore ascertain and enforce their intention as they have expressed it. “Where parties have entered into written engagements with express stipulations, it is manifestly not desirable to extend them by implications; the presumption is that having expressed some they have expressed all the conditions by which they intend to be bound under that instrument.” Broom’s Legal Maxims (8 Am. Ed.), star page 652; Bishop on Contracts (Ed. of 1881), sections 380-381; 2 Parsons on Contracts (9 Ed.), star page 515. In Aspdin v. Austin, 5 Q. B., p. 683 (13 L. J., 155), Lord Denman says: “It is one thing for the Court to effect the intention of parties to the extent to which they may have even imperfectly expressed themselves, and another thing to add to an instrument all such covenants as on a full consideration may seem to the Court to have been the complete intention of the parties, but which they either purposely or by inattention, omitted. It would be but a bad application of the rule of construction of written instruments to add to the obligation by which the *585parties have bound themselves. This would be quite unauthorized, as well as liable to create particular injustice in the application.” By the contract in question the plaintiff was bound to sell and deliver to the defendant all the coal that should be required by the latter between the dates mentioned in the writing. Nothing else appearing, this was an absolute promise on the part of the plaintiff, based upon a sufficient consideration to furnish the coal and nothing, as we have already seen, would excuse its performance, except the act of God, the law or the act or conduct of the defendant. But, there was one, and only one, limitation upon this otherwise absolute undertaking, and that limitation is found in the clause of dispensation, as it may be called, which exempted the plaintiff from liability for non-performance, if by strikes or other uncontrolable causes it should become unable to comply with its contract. This being the case, what right have we to add a further clause of exemption and provide that the plaintiff should not only be excused from full performance by strikes and other causes beyond its control, but that the defendant should be required to submit to a reduction of the quantity of coal to which it was entitled under the contract by prorating with other patrons of the plaintiff company, when there is no such stipulation in the contract and nothing from which it can be clearly inferred that the parties intended such a settlement under it. If the defendant’s rights can be impaired by the fact that the plaintiff has entered into other contracts of the same kind, why could they not as well be affected by any other contractual relation the plaintiff may have assumed. The plaintiff’s contract was not, as to its customers, a joint one, but must be treated and dealt with as several, and the rights of each customer are to be determined solely with reference to the contract made with him, and it was the duty of the plaintiff to take care that it did not go beyond its ability to *586perform, and to provide against any and all contingencies in the contract itself. We can not release the plaintiff from any part of its liability because it has failed to do so in this case, but must leave the loss where the contract places it. To do otherwise would be to make the contract, and not to construe it.
We are not permitted to interpret a contract according to our notion of what may be fair and just, unless, perhaps, in a case where the terms of the contract are in themselves ambiguous. In this case they are not so. The contract is plainly one to furnish a stipulated quantity of coal at a fixed price, without any reference to other contracts made or to be made by the plaintiff, and subject only, in the ultimate settlement between the parties under its provisions, to any failure by the plaintiff to perform its undertaking which it could show to be the result of the causes beyond its control specified in the contract. It was not the d\xty of the defendant to protect itself against other contracts made by the plaintiff, but it was the latter’s duty to make suitable provision in the contract for his own protection in respect to them. If the rule laid down by the Court below is adopted, any reduction in the quantity of coal to be delivered under the contract will be made to depend, not upon causes beyond the control of the plaintiff, but upon causes of his own creation. The reduction will be in proportion to the number of contracts that its interest or cupidity might lead it to make. "When the question is properly considered, there is no more reason for applying the pro rata rule in a case where the coal dealer is protected by a clause of exemption against any failure which results from causes beyond his control, than there Avould be for enforcing it when there is no such clause of exemption in the contract. We must remember that a contract is to be construed according to the intention of the parties as expressed in it, upon the principle that every one *587of age and discretion and qualified to do so can make any contract lie pleases, and we have no right to give the contract a meaning based upon any idea or consideration of abstract justice. When there is no allegation of fraud or undue influence, or of any other circumstance which can form the basis of an equity for setting aside the contract, we must assume that the parties understood what was fair and right when they entered into it and were fully mindful of its obligations. If the capacity of the plaintiff’s mine was so reduced “by causes beyond its control,” that it could not furnish the quantity of coal agreed to be furnished, it was entitled to the benefit of the clause of exemption, but if, by reason of our construction, which, we think, is in accordance with the plain words of its agreement, it suffers any loss or will be made to respond in damages to this defendant, or any of its other customers, it will be the result of its own folly in making a contract, which, as it turns out, can not be performed. This does not present an unusual case in the enforcement of contracts. It is a mistake to suppose that by construing the contract according to the ordinary and well-settled rules, the clause of exemption will be rendered nugatory. It may not have the meaning or effect that the plaintiff now thinks it ought to have, but it will have full operation in accordance with the intention as expressed in it, and that intention must be our only guide in ascertaining the rights and liabilities of the parties.
We have discovered no error in the other instructions given by the Court to the jury. We do not think that the plaintiff was required under the circumstances to buy any coal from other miners in order to fill the contract which was made with reference to its own mine in Jellico, that is, in so far as the plaintiff was prevented from delivering upon orders by causes beyond its control.
The ordinary rule as to damages undoubtedly is that, *588when a vendor fails to comply with bis contract, the vendee is entitled to recover the difference between the contract and market price at the time of the breach. Spiers v. Halsted, 74 N. C., 620; Holesley v. Elias, 75 N. C., 564; Oldham v. Kerchner, 79 N. C., 106, 28 Am. Rep., 302; McHose v. Fulmer, 73 Pa., 365; 8 Ad. & El., 604; Grand Tower Co. v. Phillips, 23 Wall., 471. But the general rule is subject to the qualification that a party to a contract is required to use reasonable diligence to mitigate the damages caused by the breach and, in contracts of this kind, the vendee should provide himself as cheaply as he conveniently can, from the most accessible sources, and thus lighten the loss, and his recovery will be curtailed by the sum which thus might have been saved. Oldham v. Kerchner, supra; C. C. L. Ice Co. v. Tamm, 90 Mo. App., 189; Warren v. Stoddart, 105 U. S., 224. It is true that the injured party is to be placed as near as may be in the situation he would have occupied if the wrong or breach had not been committed, and that, when a wrong has been done and the law gives a remedy, the compensation should be equal to the injury, but this is only another way of stating the same rule of damages, and it is therefore subject to the same qualifications. Wicker v. Hoppock, 6 Wall., 94; Hassard v. Hardison, 114 N. C., 482; 1 Southerland on Damages (3 Ed.), section 89. There must of course be evidence to which the rule can be applied.
While it is not necessary to consider the other exceptions, we have examined them and think that they are without merit. The error in the charge of the Court, above indicated, entitles the defendant to a new trial, but it will be restricted to the fourth issue.
New Trial.