Wisdom is knowing what you don't know.

To know thyself is the beginning of wisdom.

Knowing the edge of your competency is important. If you think you know more than you do, you will get in trouble.

True wisdom comes to each of us when we realize how little we understand about life, ourselves, and the world around us.

True wisdom lies in one's confession about the limits of one's knowledge.

In childhood be modest, in youth temperate, in adulthood just, and in old age prudent.