那些许诺我们人间天堂的人除了地狱什么都没有搞出来。

解释：树立品德，莫如日积月累，不懈怠地培植；治疗疾病，莫如彻底消除，不留下任何病根。

每一首歌都有自己的故事。

The psychologist must describe, not explain.

The science of government it is my duty to study, more than all other sciences; the arts of legislation and administration and negotiation ought to take the place of, indeed exclude, in a manner, all other arts.