To increase the force accelerating human movement means to turn to the uses of man more of the sun's energy.
 Nikola Tesla, The Problem of Increasing Human Energy (1900). copy citation

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Author Nikola Tesla
Source The Problem of Increasing Human Energy
Topic energy sun
Date 1900
Language English
Reference The Problem of Increasing Human Energy with special references to the harnessing of the Sun's energy, in "Century Illustrated Magazine"
Note
Weblink https://en.wikisource.org/wiki/The_Problem_of_Increasing_Human_Energy

Context

“All this energy emanates from one single center, one single source—the sun. The sun is the spring that drives all. The sun maintains all human life and supplies all human energy. Another answer we have now found to the above great question: To increase the force accelerating human movement means to turn to the uses of man more of the sun's energy. We honor and revere those great men of bygone times whose names are linked with immortal achievements, who have proved themselves benefactors of humanity—the religious reformer with his wise maxims of life, the philosopher with his deep truths, the mathematician with his formulæ, the physicist with his laws, the discover with his principles and secrets wrested from nature, the artist with his forms of the beautiful;” source