和平不仅仅是战争的缺席，而是正义、法律、秩序的存在，简而言之，是政府的存在。

心理学必须摆脱一切形而上学的纠缠。

In mathematics, the journey is just as important as the destination, for it is through the process of discovery that we truly learn.

我甚至不知道如何伪装。

I pay no attention whatever to anybody’s praise or blame. I simply follow my own feelings.

If you have any doubt at all about being able to carry a load in one trip， do yourself a huge favor and make two trips.

我认为数学之所以有价值，是因为它具有这种令人难以置信的结构，你可以探索和发现。