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.
Marcus AureliusDo not disturb yourself by picturing your life as a whole; do not assemble in your mind the many and varied troubles which have come to you in the past and will come again in the future, but ask yourself with regard to every present difficulty: 'What is there in this that is unbearable and beyond endurance?'
Marcus AureliusAre you distracted by outward cares? Then allow yourself a space of quiet wherein you can add to your knowledge of the Good and learn to curb your restlessness. Nowhere can a man find a quieter or more untroubled retreat than in his own soul. Avail yourself often, then, of this retirement, and so continually renew yourself.
Marcus Aurelius