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I consider Paine our greatest political thinker. As we have not advanced, and perhaps never shall advance, beyond the Declaration and Constitution, so Paine has had no successors who extended his principles.

— Thomas Edison The Philosophy of Paine (1925)

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More quotes by Thomas Edison

Many of life's failures are people who did not realize how close they were to success when they gave up.

Opportunity is missed by most people because it is dressed in overalls and looks like work.

An Enemy Called Average (1990)

Just because something doesn't do what you planned it to do doesn't mean it's useless.

Artifacts : An Archaeologist's Year in Silicon Valley (2001)

Genius is one percent inspiration, ninety-nine percent perspiration.

We don't know a millionth of one percent about anything.

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Quote text and notes from Wikiquote: Thomas Edison (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.