Live not as though there were a thousand years ahead of you. Fate is at your elbow; make yourself good while life and power are still yours.
Marcus AureliusUnderstand however that every man is worth just so much as the things are worth about which he busies himself.
Marcus AureliusLive your life as if you are ready to say goodbye to it at any moment, as if the time left for you were some pleasant surprise.
Marcus AureliusEverything is only for a day, both that which remembers and that which is remembered. Observe constantly that all things take place by change, and accustom thyself to consider that the nature of the Universe loves nothing so much as to change the things which are and to make new things like them. For everything that exists is in a manner the seed of that which will be.
Marcus Aurelius