真正的监狱不是由铁条制成的，而是由恐惧制成的。
The real prison is not the one made of iron bars, but the one made of fear.
"I think the best way to encourage children to read is to give them books that they can't put down."
我认为鼓励孩子们阅读的最好方法是给他们一些让他们爱不释手的书。
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
"Science is about asking the right questions and being persistent in finding the answers."
The only way to learn mathematics is to do mathematics.