"The habit of being uniformly considerate toward others will bring increased happiness to you. As you put into practice the qualities of patience, punctuality, sincerity and solicitude, you will have a better opinion of the world about you."

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Cultivate these, then, for they are wholly within your power: sincerity and dignity; industriousness; and sobriety. Avoid grumbling, be frugal, considerate, and frank; be temperate in manner and speech; carry yourself with authority.

— Marcus Aurelius