“He checked, of course. Being sure and being willing to risk that surety against his future were not the same thing.”

Source: The Age of Innocence

Source: Reveries of the Solitary Walker

"Miss Furr and Miss Skeene"
This story about two lesbians, written in 1911, and published in Vanity Fair magazine in July 1923, is considered to be the origin of the use of the term "gay" for "homosexual", though it was not used in this sense in the story.
Geography and Plays (1922)

Source: Resurrection (1899), Ch. 14

Source: The Lover's Dictionary

Source: One Minute Nonsense (1992), p. 114

Appendix VI : A few principal rituals – Liber Reguli.
Magick Book IV : Liber ABA, Part III : Magick in Theory and Practice (1929)
Context: A parabola is bound by one law which fixes its relations with two straight lines at every point; yet it has no end short of infinity, and it continually changes its direction. The Initiate who is aware Who he is can always check is conduct by reference to the determinants of his curve, and calculate his past, his future, his bearings, and his proper course at any assigned moment; he can even comprehend himself as a simple idea.

As quoted after his arrest for treason; see Treason: the story of disloyalty and betrayal in American history http://books.google.com/books?id=lXZKAAAAMAAJ&q=%E2%80%9CIf+a+man+isn%27t+willing+to+take+some+risk+for+his+opinions,+either+his+opinions+are+no+good+or+he%27s+no+good%E2%80%9D&dq=%E2%80%9CIf+a+man+isn%27t+willing+to+take+some+risk+for+his+opinions,+either+his+opinions+are+no+good+or+he%27s+no+good%E2%80%9D&hl=en&sa=X&ei=RgacUteRAZDYoATC1IDYCg&ved=0CDcQ6AEwAjgU by Nathaniel Weyl (1950), p. 400

As cited in Churchill by Himself (2008), ed. Langworth, PublicAffairs, p. 50, ISBN 1586486389
Post-war years (1945–1955)