"The best way to learn mathematics is to do mathematics."
学习数学的最好方法就是做数学。
世界上充满了显而易见的事物，却没有人注意到它们。
真正的创新往往来自意想不到的方向。
I think of my pile of old paperbacks, their pages gone wobbly, like they’d once belonged to the sea.
The real prison is not the one made of iron bars, but the one made of fear.