Quote by Brouwer, Luitzen Egbertus Jan
"A mathematical truth that cannot be constructed is merely a shadow of a shadow."
"A mathematical truth that cannot be constructed is merely a shadow of a shadow."
"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."