Quote by Brouwer, Luitzen Egbertus Jan
"To advance knowledge, one must have courage to challenge established certainties."
"To advance knowledge, one must have courage to challenge established certainties."
"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding."
"The intuitionist does not accept the axiom of the excluded middle."
"Creating mathematics is like creating poetry or music."
"The act of intuitively creating a mathematical system requires freedom of thought."