When the deception is open, as in a free marriage, then it does not exist, it’s unthinkable.
 Fyodor Dostoyevsky, Crime and Punishment (1867). copy citation

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Author Fyodor Dostoyevsky
Source Crime and Punishment
Topic marriage self-deception
Date 1867
Language English
Reference
Note Translated by Constance Garnett
Weblink http://www.gutenberg.org/files/2554/2554-h/2554-h.htm

Context

“That’s because you are incapable of getting away from prejudices. Confound it all! I understand now where the unpleasantness is of being deceived in a legal marriage, but it’s simply a despicable consequence of a despicable position in which both are humiliated. When the deception is open, as in a free marriage, then it does not exist, it’s unthinkable. Your wife will only prove how she respects you by considering you incapable of opposing her happiness and avenging yourself on her for her new husband. Damn it all! I sometimes dream if I were to be married, pfoo!” source