Mistake (contract law) void. Traditionally, Caveat Emptor (let the buyer beware), and under Common Law Caveat Venditor (let the seller beware). A contract might be voidable from unilateral mistake for any of the following: A mutual mistake occurs when the parties to a contract are both mistaken about the same "material" fact within their contract. They are at cross-purposes. There is a meeting of the minds, but the parties are mistaken. Hence the contract is voidable. "Collateral" mistakes will not afford the right of rescission. A collateral mistake is one that 'does not go to the heart' of the contract. For a mutual
Doctrine of the Mean contrary to the course of the Mean." This guideline requires self-education, self-questioning and self-discipline during the process of self-cultivation. This principle was demonstrated in the first chapter of "Doctrine of the Mean": "The superior man does not wait till he sees things to be cautious, nor till he hears things to be apprehensive. There is nothing more visible than what is secret, and nothing more manifest than what is minute. Therefore the superior man is watchful over himself, when he is alone." This guideline requires understanding, concern and tolerance towards one another. Leniency was demonstrated in the 13th chapter: "When