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A mathematical proof is a poem written in the language of logic.

心理學應關注心靈如何運作以解決實際問題，而不僅僅是其抽象結構。

我需要大海，因為它教導我。

I don’t care what people think of me. I care what I think of myself.

譯文：厚道的人不去做損害、詆毀別人的事來使自己得益，仁義的人不危害別人而為自己求取名譽。

The way in which men produce their means of subsistence depends first of all on the nature of the actual means they find in existence and have to reproduce.

Believe you can and you're halfway there.

質量從來不是偶然的；它始終是智慧努力的結果。