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.

The doer alone learneth.

Learning without thought is labor lost; thought without learning is perilous.

To be fond of learning is to be near to knowledge. To practice with vigor is to be near to magnanimity. To possess the feeling of shame is to be near to energy.