“If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.”
First attibution is to Ralph Bergstresser who claims to have heard this from Tesla in a conversation "following an experience with the Maharaja's son". <br class="br">Disputed <br class="br">Source: Coments From The Inventor of the Purple Harmony Plates http://www.bibliotecapleyades.net/ciencia/esp_ciencia_universalenergy02.htm,
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Nikola Tesla125
Serbian American inventor 1856–1943Related quotes
Albert Einstein (1879–1955) German-born physicist and founder of the theory of relativity
There's no evidence that Einstein ever said this. (Source: http://quoteinvestigator.com/2012/05/16/everything-energy/.) <br class="br">Misattributed
Jim Peebles (1935) Canadian-American astronomer
[Quantum Mechanics, 1992, Princeton University Press, 11, https://books.google.com/books?id=hTaw4Ht4Vi8C&pg=PA11]
Michio Kushi (1926–2014) Japanese educator
Source: Spiritual Journey: Michio Kushi's Guide to Endless Self-Realization and Freedom (1994, with Edward Esko), p. 54