True strength is not in the muscles, but in the heart.

在数学中，旅程与目的地同样重要。

I will tell you what I will do and what I will not do. I will not serve that in which I no longer believe whether it call itself my home, my fatherland, or my church: and I will try to express myself in some mode of life or art as freely as I can and as wholly as I can, using for my defence the only arms I allow myself to use—silence, exile, and cunning.

善于教导的人必须遇到善于学习的人，才能使教育的效果更大。

成功来自于专注于你能控制的事情，并放下你无法控制的事情。