"I might have thrown myself entirely into the most lucrative path, and, instead of lowering my pen to copying, I might have devoted it entirely to writings, which, in the flight which I had taken, and which I felt myself capable of continuing, might have enabled me to live in opulence, even in luxury, if only I had been disposed to combine, in the smallest degree, an author’s tricks with carefulness to produce good books. But I felt that writing for bread would soon have stifled my genius and destroyed my talents, which were more those of the heart than of the pen, and arose solely from a proud and elevated manner of thinking, which alone could support them."
January 1, 1970
https://en.wikiquote.org/wiki/Confessions_(Rousseau)