The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

There are certain things that we cannot make ourselves believe， no matter how hard we try.

自由主义与共产主义之间，或民主与威权主义之间的伟大意识形态斗争，以前者的胜利告终。

占据有利位置，更容易成功。