"Hypocrisy and dissimulation are what keeps social systems strong; it is intellectual honesty that destroys them."
Theodore Dalrymple- The New Vichy Syndrome p. 26.
If the rationality quotes are intended to illustrate rationality, rather than themselves necessarily be rational, I think this is a fine quote.
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.