With experience comes improvement.

Motives and purposes are in the brain and heart of man. Consequences are in the world of fact. — Henry Geaye

Experience is a good teacher  but she sends in terrific bills. — Minna Antrim

Experience is the best of schoolmasters  only the school-fees are heavy. — Thomas Carlyle

A burnt child dreads the fire. — English proverb

Experience is the extract of suffering. — Arthur Helps

I have but one lamp by which my feet are guided  and that is the lamp of experience. — Patrick Henry

One thorn of experience is worth a whole wilderness of warning. — James Russell Lowell

Experience is the name men give to their follies or their sorrows. — Alfred de Musset

Men are wise in proportion  not to their experience  but to their capacity for experience. — George Bernard Shaw

Is there anyone so wise as to learn by the experience of others? — Voltaire