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Nikola Tesla Quotes

Inventor and electrical engineer · 1856–1943 · Updated 2026-10-21

Tesla wrote articles, an autobiography (My Inventions, 1919) and gave many interviews. The quotes below come from those, with publication and date. A popular “energy, frequency and vibration” quote does not.

4 real Nikola Tesla quotes, with sources

✓ Sourced
“The present is theirs; the future, for which I really worked, is mine.”
Nikola Tesla — Interview with Dragislav Petković, “A Visit to Nikola Tesla”, Politika, April 1927
✓ Sourced
“Our virtues and our failings are inseparable, like force and matter.”
Nikola Tesla — “The Problem of Increasing Human Energy”, Century Magazine, June 1900
✓ Sourced
“The progressive development of man is vitally dependent on invention.”
Nikola Tesla — My Inventions, ch. 1 (Electrical Experimenter, February 1919)
✓ Sourced
“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 — “Radio Power Will Revolutionize the World”, Modern Mechanics and Inventions, July 1934

Famous quotes Nikola Tesla never said

✗ Never said it
“If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.”
Reported only secondhand by Ralph Bergstresser, who claimed to have heard it in conversation. There is no record of it in Tesla's writings or interviews.

Who was Nikola Tesla?

Tesla's alternating current system powers the modern world. A brilliant and eccentric visionary, he imagined wireless power and global communication decades before they existed, and died nearly penniless in a New York hotel room in 1943. Read more on Wikipedia.

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Questions

What is Nikola Tesla's most famous quote?

One of the best known is “The present is theirs; the future, for which I really worked, is mine.” (Interview with Dragislav Petković, “A Visit to Nikola Tesla”, Politika, April 1927)

Did Nikola Tesla really say “If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.”?

No. Reported only secondhand by Ralph Bergstresser, who claimed to have heard it in conversation. There is no record of it in Tesla's writings or interviews.

Where do these Nikola Tesla quotes come from?

Tesla wrote articles, an autobiography (My Inventions, 1919) and gave many interviews. The quotes below come from those, with publication and date. A popular “energy, frequency and vibration” quote does not.

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