It's good to learn from your mistakes. It's better to learn from other people's mistakes.

Men are wise in proportion, not to their experience, but to their capacity for experience.

I've never made a mistake. I've only learned from experience.

All life is experience, and one level is exchanged for another only when its lesson is learned.

Learning acquired in youth arrests the evil of old age; and if you understand that old age has wisdom for its food, you will so conduct yourself in youth that your old age will not lack for nourishment.

Experience is a truer guide than the words of others.