激发对一门学科兴趣的最好方法是使其值得了解，这意味着要使知识可用。
The best way to create interest in a subject is to render it worth knowing, which means to make the knowledge usable.
The only limit to our understanding of the universe is our imagination.
I think that one should recognize reality even when one doesn’t like it; indeed, especially when one doesn’t like it.