Every sane and civilised man must have some set of principles by which he chooses to reject some of his desires and to permit others.
 C. S. Lewis, Mere Christianity (1952). copy citation

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Author C. S. Lewis
Source Mere Christianity
Topic desire principles
Date 1952
Language English
Reference
Note Adapted from a series of BBC radio talks made between 1942 and 1944
Weblink https://www.dacc.edu/assets/pdfs/PCM/merechristianitylewis.pdf

Context

“Surrender to all our desires obviously leads to impotence, disease, jealousies, lies, concealment, and everything that is the reverse of health, good humour, and frankness. For any happiness, even in this world, quite a lot of restraint is going to be necessary; so the claim made by every desire, when it is strong, to be healthy and reasonable, counts for nothing. Every sane and civilised man must have some set of principles by which he chooses to reject some of his desires and to permit others. One man does this on Christian principles, another on hygienic principles, another on sociological principles. The real conflict is not between Christianity and ‘nature’, but between Christian principles and other principles in the control of ‘nature’.” source