It’s on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.

Where they have burned books, they will end in burning human beings.

We must build a world in which there shall be no economic domination.

在我看来，一种信仰只是一个信仰现象，信仰的内容无足轻重。

The most profound ideas in mathematics often arise from the simplest observations.