The document discusses the rule that contracts require consideration to be valid and exceptions to this rule. It defines consideration as something of value exchanged between parties in a contract (quid pro quo). The main points are:
1) Consideration must be real, not illusory, and lawful. It need not be adequate in value.
2) Exceptions where contracts don't require consideration include natural love and affection between close relations, completed gifts, voluntary services, time-barred debts, contracts of agency, and gratuitous bailments.
3) Promises to charities are generally unenforceable due to lack of consideration, as neither party gains or suffers directly from the promise.