Proverbs 20:5 in the King James Version
Counsel in the heart of man is like deep water; but a man of understanding will draw it out.
Context
4 The sluggard will not plow by reason of the winter; therefore he shall beg in harvest, and have nothing.
5 Counsel in the heart of man is like deep water, but a man of understanding will draw it out.
6 Many men claim to be men of unfailing love, but who can find a faithful man?