Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained.

我们不仅对我们所做的负责，也对我们没有做的负责。

On the path of science, there are no smooth roads to take; only those who are not afraid of hard work and climb the steep mountain paths have the hope of reaching the glorious summit.

There is no death, daughter. People die only when we forget them.

我不认为我做的任何事情对公众有任何兴趣。