If you do what you’ve always done, you’ll get what you’ve always gotten.

The problem is not that we laugh too much， but that we laugh about everything.

The goal of the future is full unemployment, so we can play. That's why we have to destroy the present politico-economic system.

技术发展应该服务于人类，而不是取代人类。

With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.