“This was a killer. Quite possibly a soldier, though Lilo was not expert in mental diseases.”

Speech at Victoria Hall, Geneva (10 December 1931) http://www.gandhiserve.org/information/listen_to_gandhi/lec_11_france_genevawtrans/augven_geneva_01.html <br class="br">1930s

Prologue
Zen Mind, Beginner's Mind (1973)
Variant: In the beginner’s mind there are many possibilities, but in the expert’s there are few
Source: Zen Mind, Beginner's Mind: Informal Talks on Zen Meditation and Practice

"A Statement against the War in Vietnam".
The Long-Legged House (1969)
Context: If I solve my dispute with my neighbor by killing him, I have certainly solved the immediate dispute. If my neighbor was a scoundrel, then the world is no doubt better for his absence. But in killing my neighbor, though he may have been a terrible man who did not deserve to live, I have made myself a killer — and the life of my next neighbor is in greater peril than the life of the last. In making myself a killer I have destroyed the possibility of neighborhood.

Pensées (1937).

Source: The Way Toward Health (1997), p. 71

As quoted by Mussolini in 2000 Years of Disbelief: Famous People with the Courage to Doubt by James A. Haught (1966) p. 256. From a speech he made in Lausanne, July 1904.
1900s

Source: The Confession

The Source and Aim of Human Progress (1919)