Oliver Wendell Holmes, Jr., United States v. O'Brien (220 U.S. 321…
“ But it would be a very severe construction of the contract, a contract, too, framed by the United States, to real the reservation of a right to annul for want of a diligence not otherwise promised, as importing a promise to use such diligence as should satisfy the judgment of the engineer in charge. It is one thing to make the right to continue work under the contract depend upon his approval, another to make his dissatisfaction with progress conclusive of a breach. ”
