"The vilest tastes, the lowest street-blackguardism took the place of my simple amusements and effaced even the remembrance of them. I must, in spite of a most upright training, have had a great propensity to degenerate; for the change took place with great rapidity, without the least trouble, and never did soprecocious a Caesar so rapidly become a Laridon."
January 1, 1970
https://en.wikiquote.org/wiki/Confessions_(Rousseau)