Victor Hugo - “I think, therefore I doubt.”

“I think, therefore I doubt.”

Victor Hugo Les Misérables

Similar quotes

“I doubt, therefore I think, therefore I am.”

René Descartes

“Dubito, ergo cogito, ergo sum.(English: "I doubt, therefore I think, therefore I am")”

Rene Descartes (Principles of Philosophy)

“I am mad, I think. I am mad therefore I think. I am mad therefore I think I am.”

Kate Atkinson Human Croquet

“I think, therefore I am, therefore I am photographable.”

Kurt Vonnegut Cat's Cradle

“I think I exist, therefore I exist. I think.”

David Gerrold The Man Who Folded Himself