世界上充满了显而易见的事情,但偏偏没有人注意到。
The world is full of obvious things which nobody by any chance ever observes.
发明家的职责是使他的工作尽可能对公众有用和可及。
The whole conviction of my life now rests upon the belief that loneliness, far from being a rare and curious phenomenon, peculiar to myself and to a few other solitary men, is the central and inevitable fact of human existence.