Character cannot be developed in ease and quiet. Only through experience of trial and suffering can the soul be strengthened, ambition inspired, and success achieved.
- Helen Keller
Experience is the teacher of all things.
- Julius Caesar
Human beings, who are almost unique in having the ability to learn from the experience of others.
- Douglas Adams
Do not argue with an idiot. He will drag you down to his level and beat you with experience.
- Greg king