Quote by Brouwer, Luitzen Egbertus Jan
"The foundations of mathematics are ultimately psychological, not logical."
"The foundations of mathematics are ultimately psychological, not logical."
"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."