电子和原子一样是不可穷尽的。

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

合作是解决复杂挑战的关键。

The theory of Communism may be summed up in one sentence: Abolish all private property.

人类心智在出生时并非一张白纸。