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You have to write the book that wants to be written. And if the book will be too difficult for grown-ups, then you write it for children.

In mathematics, you don't understand things. You just get used to them.

偉大的領導者不會告訴你該做什么，他們會向你展示如何去做。

我不想成為統治者。我想成為反叛者。

Make America Great Again!

What other dungeon is so dark as one's own heart! What jailer so inexorable as one's self!

離散數學和連續數學之間的相互作用是一些最有趣的問題所在。