"In four ways ... should one who flatters be understood as a foe in the guise of a friend: He approves of his friend's evil deeds, he disapproves his friend's good deeds, he praises him in his presence, he speaks ill of him in his absence."

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Your worst enemy cannot harm you as much as your own unguarded thoughts. Develop the mind of equilibrium. You will always be getting praise and blame, but do not let either affect the poise of the mind: follow the calmness, the absence of pride.

— Gautama Buddha