一门科学的历史就是它的问题域的历史。

I'm the reason your joy won't last.

Mathematics allows us to see the hidden structures that govern the world around us.

The will to learn is an intrinsic motive, one that finds both its source and its reward in its own exercise.

译文：口头上说的话像蜂蜜一样甜，内心里却像剑一样歹毒。