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

I give the fight up: let there be an end, a privacy, an obscure nook for me. I want to be forgotten even by God.

没有丑陋的爱，也没有英俊的监狱。

Every application of technology must be based on sustainability.

最好的数学是永恒的。