化学的语言是普遍的,它的符号被所有国家理解。
我不是说唱歌手,我是一个美洲原住民的传奇。
痛苦可以是一种知识形式。
The best ideas often come from unexpected places.
The only way to do great work is to love what you do.
The only limit to our realization of tomorrow is our doubts of today.