“When a man has a passion for a woman, and when that passion is of such a nature that he regards her with reverent admiration as an image of purity, none the less, in the unconscious, his desires turn towards bodily fulfillment, none the less the goal of physical possession is prefigured in the deepest recesses of his imagination. But when the passion is confined to the realm of the spirit, and, in that realm, is a man's passion for a man, how can it seek fulfillment? Unrestingly, the fancy wanders over the honored form, flaming up again and again to fresh ecstasy, but never finding repose in a last surrender. It flows on without pause in a current that can never empty the reservoir from which it comes. This passion is insatiable, as the spirit invariably is.”

http://www.entrepreneur.com/article/234222.

As quoted in Florilegium, XVIII, 23, as translated in Dictionary of Quotations (1906) by Thomas Benfield Harbottle, p. 368
No one is free who has not obtained the empire of himself.
As translated by Nicholas Rowe(1732)
No man is free who cannot command himself.
As quoted in Moral Encyclopaedia, Or, Varlé's Self-instructor, No. 3 (1831) by by Charles Varle
No man is free who cannot control himself.
As quoted in 25 Days to Better Thinking and Better Living: A Guide for Improving Every Aspect of Your Life (2006) by Linda Elder and Richard Paul
Florilegium

Source: Discipleship (1937), Revenge, p. 142

As reported by Alexander Polyhistor, and Diogenes Laërtius in Lives and Opinions of Eminent Philosophers, "Pythagoras", Sect. 30, in the translation of C. D. Yonge (1853)

"Be Angry At The Sun" (1941)

Source: Discipleship (1937), Revenge, p. 142.
Context: The passion of Christ is the victory of divine love over the powers of evil, and therefore it is the only supportable basis for Christian obedience. Once again, Jesus calls those who follow him to share his passion. How can we convince the world by our preaching of the passion when we shrink from that passion in our own lives? On the cross Jesus fulfilled the law he himself established and thus graciously keeps his disciples in the fellowship of his suffering.

Book 6, chapter 12.
Books, Coningsby (1844), Henrietta Temple (1837)

Source: The Wine of Violence (1981), Chapter 2 (p. 21)

1880s, In Our Youth Our Hearts Were Touched With Fire (1884)