Lucy v. Zehmer

The mental assent of the parties is not requisite for the formation of a contract. If the words or other acts of one of the parties have but one reasonable meaning, his undisclosed intention is immaterial except when an unreasonable meaning which he attaches to his manifestations is known to the other party.

Brief Fact Summary:

If a party to the contract has a reasonable belief that the other party has the requisite intent to enter into the agreement when he does not, the contract is still enforceable.