认识你自己。

The only sensible ends of literature are, first, the pleasurable toil of writing; second, the gratification of one's family and friends; and lastly, the solid cash.

The propensity to truck， barter， and exchange one thing for another is common to all men， and to be found in no other race of animals.

In the darkness, we find the light of our own humanity.

Success is a state of mind. If you want success, start thinking of yourself as a success.

软件工程的目标是生产可靠、可维护和高效的软件系统。