A passage from Marcus Aurelius
Marcus Aurelius, Meditations 7.59
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Look within. Within is the fountain of good, and it will ever bubble up, if thou wilt ever dig.
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Men seek retreats for themselves, houses in the country, sea-shores, and mountains... But this is altogether a mark of the most common sort of men, for it is in thy power whenever thou shalt choose to retire into thyself.
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