宇宙不仅比我们想象的更奇怪，而且比我们能够想象的更奇怪。
The key to progress in science is persistence and an open mind.
To any artist, worthy of the name, all in nature is beautiful, because his eyes, fearlessly accepting all exterior truth, read there, as in an open book, all the inner truth.
Democracy is the only system that can reflect the human spirit's indomitable will to be free.
