“The aim of art, the aim of a life can only be to increase the sum of freedom and responsibility to be found in every man and in the world. It cannot, under any circumstances, be to reduce or suppress that freedom, even temporarily.”

PART II, CHAPTER I.
Mysticism. A Study of the Nature and Development of Man's Spiritual Consciousness (1911)

Source: The Ethics of Freedom (1973 - 1974), p. 398
Context: It seems to me that the free man, i. e., the man freed in Christ, ought to take parts in all movements that aim at human freedom. He obviously ought to oppose all dictatorship and oppression and all the fatalities which crush man. The Christian cannot bear it that others should be slaves. His great passion in the world ought to be a passion for the liberation of men.

"Putting First Things First", Foreign Affairs (January 1960)

Referring to marriage
A Hero of Our Time (1840; rev. 1841)

(179).
Saint Genet, Actor and Martyr (1952)

‘Introduction’, New Fabian Essays (1952), p. 29

Preface, Second edition (21 June 1849), added in response to some controversies and rumors caused by the publication of the first edition of his novel. There were no changes made in the text of the novel itself.
The Nemesis of Faith (1849)

On Lord Bacon (1837)

Source: The Life of Reason: The Phases of Human Progress (1905-1906), Vol. II, Reason in Society, Ch. V: Democracy