数学是给不同事物赋予相同名称的艺术。

"We are all searching for something, but we don't always know what it is. Sometimes it's a person, sometimes it's a place, and sometimes it's just a feeling."

To feel much for others and little for ourselves； to restrain our selfishness and exercise our benevolent affections， constitute the perfection of human nature.

译文：使用人就如使用器物一样，各取其长处而使用。