Quote by Brouwer, Luitzen Egbertus Jan
"To progress, the mind must maintain both skepticism and openness simultaneously."
More from Brouwer, Luitzen Egbertus Jan
"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."