The best way to learn mathematics is to do mathematics.

【译文】溺爱母亲会养出败家子，严格管教不会出凶暴奴仆。

德性的知识，不是从见闻中产生的。

我们都在阴沟里，但有些人却在仰望星空。

Love is the ultimate act of defiance against the chaos of the world.

You get what you give. What you put into things is what you get out of them.

我不喜欢安逸，我喜欢被挑战。