Gustave Flaubert: Everything one Invents is True

“The day before yesterday, in the woods of Touques, in a charming spot beside a spring, I found old cigar butts and scraps of pâté. People had been picnicking. I described such a scene in Novembre eleven years ago; it was entirely imagined, and the other day it came true. Everything one invents is true, you may be sure. Poetry is as precise as geometry. Induction is as accurate as deduction; and besides, after reaching a certain point one no longer makes any mistake about the things of the soul.”
― Gustave Flaubert, Selected Letters