Proverbs 25:3

The heaven for height, for it extends to immeasurable distances, and the earth for depth, since its abysses are unbelievably deep, and the heart of kings is unsearchable, their intentions cannot be figured out by ordinary subjects, whence it follows that it is foolish for men to flatter themselves with possessing the favor of the mighty, true wisdom consisting in guarding oneself in both words and deeds and in letting true worth make its impression.