地球也是球形的，因为它从各个方向向中心施加压力。

The arithmetic of elliptic curves is a microcosm of the deeper structures in number theory.

The world is an extremely dangerous, untrustworthy, unreliable place.

A book is a dream that you hold in your hand.

But what is happiness except the simple harmony between a man and the life he leads?

I fell asleep reading a dull book and dreamed I kept on reading, so I awoke from sheer boredom.