“In a scientific worldview, man determines his own fate by fighting for freedom from any kind of spiritual enslavement.”

Go Rin No Sho (1645), The Water Book
Context: In strategy your spiritual bearing must not be any different from normal. Both in fighting and in everyday life you should be determined though calm. Meet the situation without tenseness yet not recklessly, your spirit settled yet unbiased. Even when your spirit is calm do not let your body relax, and when your body is relaxed do not let your spirit slacken.

"Black Male Vegan: 77-Year-Old Bodybuilder Jim Morris Proves Vegans Can Be Muscular & Healthy" http://frugivoremag.com/2012/10/black-male-vegan-77-year-old-bodybuilder-jim-morris-proves-vegans-can-be-muscular-healthy/, interview with Frugivore magazine (October 2, 2012).

Book VI, Chapter 7.
Books, Coningsby (1844), Vivian Grey (1826)

Source: Tao Te Ching, Ch. 59 as interpreted by Stephen Mitchell (1992)
Context: The mark of a moderate man
is freedom from his own ideas.
Tolerant like the sky,
all-pervading like sunlight,
firm like a mountain,
supple like a tree in the wind,
he has no destination in view
and makes use of anything
life happens to bring his way.

1920s, Notes on Democracy (1926)
Context: Liberty means self-reliance, it means resolution, it means enterprise, it means the capacity for doing without. The free man is one who has won a small and precarious territory from the great mob of his inferiors, and is prepared and ready to defend it and make it support him. All around him are enemies, and where he stands there is no friend. He can hope for little help from other men of his own kind, for they have battles of their own to fight. He has made of himself a sort of god in his little world, and he must face the responsibilities of a god, and the dreadful loneliness.

Source: Genome (1999), Chapter 22 “Free Will” (p. 308)

Henri Poincaré, Critic of Crisis: Reflections on His Universe of Discourse (1954), Ch. 2. The Age of Innocence