Paul Nadar, 1886, "I am going to write my first philosophical principle, it was not I who formulated it but Malebranche. I have looked hard, but I have not found a better one.", Gelatin silver print, J. Paul Getty Museum, LL/120520
Paul Nadar, 1886, "I find here the name of Monsieur Pasteur: that is where I will write my name. Monsieur Pasteur is one of the greatest geniuses of our age because, contrary…he proceeds from the unknown…", Gelatin silver print, J. Paul Getty Museum, LL/120519
