死亡是一种幸福，是非常深邃的幸福——是在痛苦不堪的徘徊后踏上归途，是严重错误的纠正，是从难以忍受的枷锁桎梏中得到解放。
If you think you understand quantum mechanics, you don't understand quantum mechanics.
The world is full of obvious things which nobody by any chance ever observes.
The only limits in life are the ones you set for yourself.
最高的知识是知道我们被神秘所包围。
我确信宇宙中充满了智慧生命。只是它们太聪明了，不会来这里。
The best picture books work on different levels for different ages.