数学推理可以相当系统地看作是两种能力的结合运用,我们可以称之为直觉和独创性。
"I must say a word about fear. It is life's only true opponent. Only fear can defeat life."
That is what learning is. You suddenly understand something you've understood all your life, but in a new way.
永远不要停止质疑如何改进事物。