The total speech act comprises both the act of uttering words and the act of meaning.

数学研究就是对模式的研究。

你不能因为我做我自己而生气，我又没干涉你。

I think the most important thing is to be true to yourself.

思想之流朝着有目的的方向流动。

America has no permanent friends or enemies, only interests.

You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.

To write is to leave a legacy of thought.