A passage from Marcus Aurelius
Marcus Aurelius, Meditations 3.8
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If thou findest in human life anything better than justice, truth, temperance, fortitude, turn to it with all thy soul, and enjoy that which thou hast found to be the best.
Related passages
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At dawn, when you have trouble getting out of bed, tell yourself: 'I have to go to work — as a human being.'
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Take care not to be Caesarified, or dyed with purple; for it does happen. Keep thyself then simple, good, pure, serious, free from affectation.
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It is a man's special privilege to love even those who wrong him.