“Everything is theoretically impossible, until it is done.”

Last update June 3, 2021. History

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Robert A. Heinlein557

American science fiction author 1907–1988

Related quotes

“Everything is theoretically impossible, until it’s done. One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.”

Robert A. Heinlein book Between Planets

Source: Between Planets (1951), Chapter 2, “Mene, Mene, Tekel, Upharsin” (p. 23)

“Everything that is done in this world is done by hope.”

Martin Luther (1483–1546) seminal figure in Protestant Reformation

“Everything that is done in the world is done by hope.”

Martin Luther King, Jr. (1929–1968) American clergyman, activist, and leader in the American Civil Rights Movement

Protestant Reformation leader Martin Luther (King's namesake)
Misattributed

“None of us can help the things life has done to us. They’re done before you realize it, and once they’re done they make you do other things until at last everything comes between you and what you’d like to be, and you’ve lost your true self forever.”

Eugene O'Neill Long Day's Journey into Night

Page 63 (Act 2, Scene 1)
Long Day's Journey into Night (1955)
Source: Long Day's Journey Into Night
Context: But I suppose life has made him like that, and he can't help it. None of us can help the things life has done to us. They're done before you realize it, and once they're done they make you do other things until at last everything comes between you and what you'd like to be, and you've lost your true self forever.