Living Self-Mastery (Verse 33, Tao Te Ching, Lao-tzu)

One who understands others has knowledge;
one who understands himself has wisdom.
Mastering others requires force;
mastering the self needs strength.

If you realize that you have enough,
you are truly rich.

One who gives himself to his position
surely lives long.
One who gives himself to the Tao
surely lives forever.