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。
If I was an artist and I was in the studio, then whatever I was doing in the studio must be art.
Brave doesn't mean you're not scared. It means you go on even though you're scared.