The sea refuses no river. Ignorance of the law is no excuse for breaking it. Yesterday is history, tomorrow is mystery. Lightning never strikes the same place twice. It is the last straw that breaks the camel's back.
Fear of death is worse than death itself.
Eat to live, not live to eat. When all you have is a hammer, everything looks like a nail. Spare the rod and spoil the child. Everybody's business is nobody's business. Thinking without learning is dangerous.