The principles of logic and mathematics are true universally simply because we never allow them to be anything else.

网络背后的梦想是一个共同的信息空间，我们通过共享信息进行交流。

The best way to learn mathematics is to do mathematics.

我不和别人竞争，我和自己竞争。

Mental life is a series of experiments in adaptation.

The past is not dead. It is not even past.