"The only limit to our realization of tomorrow will be our doubts of today."
数学不是一门演绎科学——那是陈词滥调。当你试图证明一个定理时,你不仅仅是列出假设然后开始推理。你所做的是反复试验、实验和猜测。
The brain is locked in total darkness, of course, children, built that way, but the mind, the mind is full of light.