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The scientists from Franklin to Morse were clear thinkers and did not produce erroneous theories. The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane.

— Nikola Tesla

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More quotes by Nikola Tesla

Let the future tell the truth and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I really worked, is mine.

Ere many generations pass, our machinery will be driven by a power obtainable at any point of the universe.

Money does not represent such a value as men have placed upon it. All my money has been invested into experiments with which I have made new discoveries enabling mankind to have a little easier life.

Today's scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality.

I have harnessed the cosmic rays and caused them to operate a motive device.

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