Never esteem anything as of advantage to you that will make you break your word or lose your self-respect.

No one was ever injured by the truth; but he who persists in self-deception and ignorance is injured.

Live not one's life as though one had a thousand years, but live each day as the last.

Let not your mind run on what you lack as much as on what you have already.

No one loses any other life than the one he now lives, nor does one live any other life than that which he will lose.

The happiness of your life depends upon the quality of your thoughts: therefore, guard accordingly, and take care that you entertain no notions unsuitable to virtue and reasonable nature.

From Alexander the Platonic, not frequently nor without necessity to say to any one, or to write in a letter, that I have no leisure; nor continually to excuse the neglect of duties required by our relation to those with whom we live, by alleging urgent occupations.