The past is a shadow that follows us everywhere.

组织的质量由其服务的质量决定。

To write is to give voice to the silenced.

The absence of alternatives clears the mind marvelously.

A good memory is needed after one has lied.

The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

The beauty of theoretical computer science lies in its ability to connect abstract mathematical concepts with practical computational problems.