One man may be more cunning than another, but not more cunning than everybody else.

Benjamin Franklin

If you kick a stone in anger, you'll hurt your own foot.

Korean Proverb

To get lost is to learn the way.

African Proverb

The hard and mighty lie beneath the ground while the tender and weak dance on the breeze above.

Lao Tzu

Even from a foe a man may learn wisdom.

Greek proverb

Better to remain silent and be thought a fool than to speak out and remove all doubt.

Abraham Lincoln