Without friends no one would choose to live. Aristotle
People are just as happy as they choose to be. Abraham Lincoln
It is impossible for the mind to remain undisturbed by thoughts, but anyone serious about the matter can certainly permit them entry or drive them away, and although their origin does not lie entirely under our control we can choose to approve of them and to adopt them. John Cassian
If you choose to make friendship with a pig you must be prepared to live in the mad. African Proverb
Choose to fight, not negotiate. Klingon Proverb
If you choose to lie down with dogs, you must be prepared to wake up with fleas. African Proverb