The most important thing about a theory is that it explains the facts.

I'm my own experiment. I'm my own work of art.

永远不要停止学习，因为世界永远不会停止变化。

When we speak of 'meaning' a word， we are in the first instance speaking of a certain kind of act.

——1945年4月接到希特勒已死的消息时说

当你既倾听数据又倾听人时，才能做出最佳决策。