The moment you doubt whether you can fly, you cease for ever to be able to do it.
当你怀疑自己是否能飞的那一刻，你就永远失去了飞翔的能力。
The human soul is a fragile thing.
Art is not a luxury, but a necessity.
在科学领域，每一个被回答的问题都会引出十几个等待探索的新问题。