"I've become convinced that every person should treat himself strictly and even rudely and distrustfully; it's difficult to tame the beast in oneself."

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If the transmigration of a soul takes place into a rational being, it simply becomes the soul of that body. But if the soul migrates into a brute beast, it follows the body outside, as a guardian spirit follows a man. For there could never be a rational soul in an irrational being.

— Sallust