劳动是一切财富和一切文化的源泉。
Labor is the source of all wealth and all culture.
科学以冒险的精神前进,总是寻求未知。
追求知识是一场没有终点的旅程。
发明家的职责是使他的工作尽可能对公众有用和可及。
The deterioration of a government begins almost always by the decay of its principles.