Imprudent people accumulate adversaries, intelligent people accumulate acquaintances, and enlightened people accumulate friends.

A shrewd enemy will benefit you more than a foolish friend.

If you step on everyone's toes, you will have no one to dance with.

Feed your enemies with a long spoon so they can't bite your hand.

Keep friends. Lose enemies. Multiply allies. Increase comrades.

Learn from acquaintances, and you are clever;
from friends, and you are intelligent; from enemies, and you are shrewd; but learn from all, and you are wise.