Think nothing profitable to you which compels you to break a promise, to lose your self respect, to hate any person, to curse, to act the hypocrite.
Marcus AureliusRemember that even if you were to live for three thousand years, or thirty thousand, you could not lose any other life than the one you have, and there will be no other life after it. So the longest and the shortest lives are the same. The present moment is shared by all living creatures, but the time that is past is gone forever. No one can lose the past or the future, for if they don't belong to you, how can they be taken from you?
Marcus AureliusAnd thou wilt give thyself relief, if thou doest every act of thy life as if it were the last.
Marcus Aurelius