“Man (and woman) has an infinite capacity for self-development. Equally, he has an infinite capacity for self-destruction. A human being may be clinically alive and yet, despite all appearances, spiritually dead.”
Source: Learning How to Learn: Psychology and Spirituality in the Sufi Way
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Idries Shah 33
writer and Sufi teacher 1924–1996Related quotes

“Most human beings have an almost infinite capacity for taking things for granted.”
"Variations on a Philosopher" in Themes and Variations (1950)
Source: Brave New World
Source: Something More, A Consideration of the Vast, Undeveloped Resources of Life (1920), p. 63

Buckingham and Ross 1892, p. 120
His Character

1964, p. 141; Chapter 1; Chapter 1: The Origin of Speech
Speech, 1930