“Those who based their lives on the unintelligence of sentimentality fight to save themselves with the unintelligence of brutality.”

Variant: He who would live must fight. He who doesn't wish to fight in this world, where permanent struggle is the law of life, has not the right to exist.
Source: Mein Kampf

Review of the book My Hope for America (1964) by Lyndon B. Johnson
Cannibals and Christians (1966)

Indian Spirituality and Life (1919)
Context: The highest spirituality indeed moves in a free and wide air far above that lower stage of seeking which is governed by religious form and dogma; it does not easily bear their limitations and, even when it admits, it transcends them; it lives in an experience which to the formal religious mind is unintelligible. But man does not arrive immediately at that highest inner elevation and, if it were demanded from him at once, he would never arrive there. At first he needs lower supports and stages of ascent; he asks for some scaffolding of dogma, worship, image, sign, form, symbol, some indulgence and permission of mixed half-natural motive on which he can stand while he builds up in him the temple of the spirit. Only when the temple is completed, can the supports be removed, the scaffolding disappear. The religious culture which now goes by the name of Hinduism not only fulfilled this purpose, but, unlike certain credal religions, it knew its purpose. It gave itself no name, because it set itself no sectarian limits; it claimed no universal adhesion, asserted no sole infallible dogma, set up no single narrow path or gate of salvation; it was less a creed or cult than a continuously enlarging tradition of the Godward endeavour of the human spirit. An immense many-sided many-staged provision for a spiritual self-building and self-finding, it had some right to speak of itself by the only name it knew, the eternal religion, Sanâtana Dharma. It is only if we have a just and right appreciation of this sense and spirit of Indian religion that we can come to an understanding of the true sense and spirit of Indian culture.

Source: On the Jellicoe Road

As quoted in Christ's Second Coming Fulfilled (1917) by Marion Morris, p. 144

Source: T is for Trespass

"In Praise of the Fighters" (song)
Variant translation: There are men who struggle for a day and they are good.
There are men who struggle for a year and they are better.
There are men who struggle many years, and they are better still.
But there are those who struggle all their lives:
These are the indispensable ones.
As quoted in Democracy Unbound : Progressive Challenges to the Two Party System (1997) by David Reynolds; also quoted by Cuban musician and poet Silvio Rodríguez before his song "Sueño con serpientes".
Also quoted by Eduardo Galeano (Uruguayan writer) to describe Nestor Kirchner as he received the notice of his death.
The Mother (1930)