世间美好的事物往往不牢固,彩云容易消散,琉璃容易破碎
In the long history of humankind (and animal kind, too) those who learned to collaborate and improvise most effectively have prevailed.
数学推理可以相当系统地看作是对两种能力的结合运用,我们可以称之为直觉和独创性。