More from Pierre Teilhard de Chardin
- The Phenomenon of Man (1955)
- “The Evolution of Chastity” (February 1934), tr. René Hague in Toward the Future (1975)
- A Sketch of a Personalistic Universe (1936)

The day will come when, after harnessing the ether, the winds, the tides, gravitation, we shall harness for God the energies of love. And, on that day, for the second time in the history of the world, man will have discovered fire.
“The Evolution of Chastity” (February 1934), in Toward the Future (1975), trans. René Hague
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