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"There is only one corner of the universe you can be certain of improving, and that's your own self."

"Experience teaches only the teachable."

"Children are remarkable for their intelligence and ardour, for their curiosity and tolerance of shams, the clarity and ruthlessness of their vision."

"People are much too solemn about things - I'm all for sticking pins into episcopal behinds."

"Facts do not cease to exist because they are ignored."

"From their experience or from the recorded experience of others (history), men learn only what their passions and their metaphysical prejudices allow them to learn."

"Experience is that marvelous thing that enables you to recognize a mistake when you make it again."

"Good judgment comes from experience, and experience comes from bad judgment."

"Experience is a hard teacher because she gives the test first, the lesson afterwards."

"Experience teaches slowly and at the cost of mistakes."

"You cannot acquire experience by making experiments. You cannot create experience. You must undergo it."

"By far the best proof is experience."