"I soon had an opportunity to disclose them unreservedly in a work of greater importance; for it was, I think, in this year (1753) that the ‘Origin of Inequality amongst Mankind’ appeared as the subject proposed for discussion by the Academy of Dijon. Struck by this great question, I felt surprised that this Academy had ventured to propose it; but since it had had the courage to do so, I thought I might have the courage to discuss it, and undertook the task."
January 1, 1970
https://en.wikiquote.org/wiki/Confessions_(Rousseau)