今天种下的每一棵树都是对明天的承诺。

科学进步是以一次次的葬礼为代价的。

In this trifling affair， that misunderstandings and neglect occasion more mischief in the world than even malice and wickedness. At all events， the two latter are of less frequent occurrence.

The world is a place of the living, and the dead have no place in it. The dead are nothing. They are not even a memory.