The greatest inventions are those which most directly meet the wants of mankind.

The present state of the system of nature is evidently a consequence of what it was in the preceding moment, and if we conceive of an intelligence which at a given instant comprehends all the relations of the entities of this universe, it could state the respective positions, motions, and general effects of all these entities at any time in the past or future.

写作是一种思考的方式，一种理解世界的方式。

The computer is an interactive medium, the first medium that allows for the representation of processes that can be manipulated by the user.

Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen.

一个有趣的事实是，岩石越古老，与今天的岩石差异越大。