True or false: A contract to perform an impossible action is valid.

A contract to perform an impossible action is considered invalid because one of the essential elements of a valid contract is the capacity to perform the obligations stipulated in the agreement. If an action is deemed impossible, then it undermines the contract's validity since one party cannot fulfill their obligations, thereby rendering the contract unenforceable.

The principle of legality requires that the subject matter of a contract must be legal and possible to perform. A contract based on an impossible action fails to meet this criterion, which is why the assertion that such a contract is valid is false.

Furthermore, a contract requires a mutual agreement on terms that can be executed; if the act is impossible, there's no feasible agreement, thus negating any contractual obligation.