The best scientists are those who remain students forever.

"A dreamer is one who can only find his way by moonlight, and his punishment is that he sees the dawn before the rest of the world."

在弦理论中，所有粒子都是微小超对称弦的振动。

Farmers are the first environmentalists, working with nature every day.

The reason that the invisible hand often seems invisible is that it is often not there.