The only thing that is truly important is the difference you make in the world.

最伟大的知识是认清自己。

The poet is someone who pays attention to the world.

Combinatorics is like the art of counting without actually counting.

诗人是无形之物的画家，是无形之物的雕塑家。

The greatest happiness which can happen to any country is the taking of the supreme power out of the hands of the governing few and putting it into the hands of the governed many.

解释：任用有才能的人，对国家大有好处。