Our greatest natural resource is the minds of our children.

We kid ourselves if we think that the ratio of procedure to data in an active data-base system can be made arbitrarily small or even kept small.

To understand oneself is to understand the world.

最伟大的头脑既能成就最大的美德，也能犯下最大的恶行。

科学的进步依赖于挑战权威的勇气。