The real discovery is the one that makes me capable of stopping doing philosophy when I want to.
译文:读书学习,每天都要补上自己的不足,半途而废和剪断织布的线有啥区别?(乐羊子妻劝丈夫坚持学习)
The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.