宇宙是一个谜题,而化学是其中的一把钥匙。
The universe is a puzzle, and chemistry is one of the keys.
The best teacher is the one who suggests rather than dogmatizes, and inspires his listener with the wish to teach himself.
生活不是一排对称的马车灯;生活是一个光晕,一个半透明的外壳,从意识的开始到结束都包围着我们。
译文:绝交时不以恶语伤人。
The tyranny of a prince in an oligarchy is not so dangerous to the public welfare as the apathy of a citizen in a democracy.