“The true measure of a man is not his intelligence or how high he rises in this freak establishment. No, the true measure of a man is this: how quickly can he respond to the needs of others and how much of himself he can give.”

Source: UnWholly

The New Idolatry (1905), p. 242

Source: Immortality, Inc. (1959), Chapter 15 (p. 71)

The Fantastic Imagination (1893)
Context: "But a man may then imagine in your work what he pleases, what you never meant!"
 Not what he pleases, but what he can. If he be not a true man, he will draw evil out of the best; we need not mind how he treats any work of art! If he be a true man, he will imagine true things: what matter whether I meant them or not? They are there none the less that I cannot claim putting them there! One difference between God's work and man's is, that, while God's work cannot mean more than he meant, man's must mean more than he meant. For in everything that God has made, there is layer upon layer of ascending significance; also he expresses the same thought in higher and higher kinds of that thought: it is God's things, his embodied thoughts, which alone a man has to use, modified and adapted to his own purposes, for the expression of his thoughts; therefore he cannot help his words and figures falling into such combinations in the mind of another as he had himself not foreseen, so many are the thoughts allied to every other thought, so many are the relations involved in every figure, so many the facts hinted in every symbol. A man may well himself discover truth in what he wrote; for he was dealing all the time with things that came from thoughts beyond his own.

Source: All the Pretty Horses

To the Countess of Cumberland. Stanza 12, reported in Bartlett's Familiar Quotations, 10th ed. (1919).

El hombre vive midiendo, y no es medida de nada. Ni de sí mismo.
Voces (1943)

Source: 1930s- 1950s, Landmarks of Tomorrow: A Report on the New 'Post-Modern' World (1959), p. 144