A more thorough explanation:

Definition: The solemnity of contract refers to the idea that any two people can enter into a contract of their choosing, and that the resulting contract is legally binding as long as certain formalities are followed and there are no legal defenses against it.

Example: A common example of the solemnity of contract is a real estate transaction. When a buyer and seller agree to a sale, they must follow certain formalities, such as signing a contract and transferring ownership of the property. As long as these formalities are followed and there are no legal defenses against the sale, the contract is legally binding.

Another example: Two friends agree to start a business together. They create a written agreement outlining their roles and responsibilities, as well as how profits will be split. As long as they both sign the agreement and there are no legal defenses against it, the contract is legally binding.

The examples illustrate how the solemnity of contract allows individuals to enter into agreements of their choosing, as long as they follow certain formalities and there are no legal defenses against the contract. This concept is important because it allows people to make agreements with confidence that they will be upheld by the legal system.