The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

Actions are right in proportion as they tend to promote happiness； wrong as they tend to produce the reverse of happiness.

Don't be afraid to stand out, the world needs your unique light.

材料中拓扑和对称性之间的相互作用可以导致意想不到且令人兴奋的物理现象。

挑战在于让不可能的事物看起来可信。

The dead are not silent. They are merely waiting to be heard.