"We are all in the gutter, but some of us are looking at the stars."

The best literature is always subversive, unsettling what is established, questioning authority.

The key to success is to focus on goals, not obstacles.

"Some infinities are bigger than other infinities."

数学发现的过程不是关于到达目的地，而是关于旅程本身。

Theoretically there is a perfect possibility of happiness: believing in the indestructible element within oneself, and not striving towards it.