Final answer:
The question relates to the legal aspects of contracting, emphasizing the due signing, dating, and responsibility of the parties within a contract.
Step-by-step explanation:
The subject matter deals with the legality of contracts and the obligations of the parties involved. Specifically, the quotes discuss the due signing and certification of contracts, the responsibility to insert dates, and the act of one party becoming a surety for another. A contract is a legally binding agreement between parties, and its proper execution is critical to its enforcement. Furthermore, the mention of a surety indicates a guarantee by one party to assume responsibility for another's debt or obligation, which is a common legal arrangement. Lastly, a contract must be signed and dated appropriately to be deemed valid, which is referred to in the excerpts provided.