There is no man, however wise, who has not at some period of his youth said things, or lived in a way the consciousness of which is so unpleasant to him in later life that he would gladly, if he could, expunge it from his memory.

一个人的心灵美好，是不可能掩蔽的，这会表现在形体容貌上，也能在神色上看得出来。

代数分析很快让我们忘记了研究的主要对象，将注意力集中在抽象的组合上，直到最后我们才回到最初的目标。

生命短暂，让它甜美。