I collect antique books. I recently acquired a daybook from 1909. The first few pages are about emergencies and who the presidents have been. Then there is this. I found it interesting. BUSINESS LAWS IN BRIEF It is a fraud to conceal a fraud. A note give by a minor is void. Ignorance of the law excuses no one. A contract made with a lunatic is void. A contract made with a minor is invalid. The acts of one partner bind all the others. An agreement without consideration is void. The law compels no one to do impossiblities. Contracts made on Sunday cannot be enforced. Signatures made in lead pencil are good in law A receipt for money paid is not legally conclusive. Funny how we should still apply some of these rules today..Specially #3.