希望不是一种情绪，而是一种选择。

It is in your moments of decision that your destiny is shaped.

For the eyes of the world now look into space, to the moon and to the planets beyond, and we have vowed that we shall not see it governed by a hostile flag of conquest, but by a banner of freedom and peace.

未来属于科学，也属于那些与科学为友的人。

作家的任务是挖掘埋藏在人心中的秘密。