证明的严谨性将数学与所有其他科学区分开来。
Rigor in proof is what separates mathematics from all other sciences.
You can do anything you set your mind to, man.
艺术不在于你看到了什么,而在于你让别人看到了什么。
Sustainability is no longer an option—it's a business imperative for long-term survival.
我总是试图在我的画中加入一点幽默,因为我认为这会让它们更有趣。