“Tout effort vers la connaissance est vain. Tout n'est qu'expérience et qu'aventure. Sans cesse, nous formons de nouveaux mélanges avec des éléments inconnus.”Les vagues
En anglais : "There is no stability in this world. Who is to say what meaning there is in anything? Who is to foretell the flight of a word? It is a balloon that sails over tree-tops. To speak of knowledge is futile. All is experiment and adventure. We are forever mixing ourselves with unknown quantities. What is to come? I know not."