Quote by Brouwer, Luitzen Egbertus Jan
"A mathematical proof without intuitive understanding is mere symbol manipulation."
"A mathematical proof without intuitive understanding is mere symbol manipulation."
"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."