"Thrown, in spite of myself, into the great world, without possessing its manners, and unable to acquire or conform to them, I took it into my head to adopt manners of my own, which might enable me to dispense with them. Being unable to overcome my foolish and disagreeable shyness, which proceeded from the fear of offending against the rules of polite society, I resolved, in order to give myself courage, to trample them underfoot. Shame made me cynical and sarcastic. I affected to despise the politeness which I did not know how to practise."
January 1, 1970
https://en.wikiquote.org/wiki/Confessions_(Rousseau)