I'm not a gangster, I'm far from it.

空间是一种物质。

科学的挑战不仅在于找到答案，还要理解其更深层次的含义。

"The world is full of poetry. The air is living with its spirit; and the waves dance to the music of its melodies, and sparkle in its brightness."

衡量一个文明的标准是它如何对待其艺术家。