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.

The most successful companies are those that listen to their customers.

音乐是灵魂的语言。

The study of psychology is the study of life's wisdom.

Freedom is the recognition of necessity.

人类并不是逻辑的，他的智力历史是心理储备和妥协的记录。即使在被迫放弃逻辑基础时，他仍然坚守他在旧信仰中能够坚持的部分。