Where we choose to put our attention changes our brain, which in time can change how we see and interact with the world.

If we are to give our utmost effort and skill and enthusiasm, we must believe in ourselves, which means believing in our past and in our future, in our parents and in our children, in that particular blend of moral purpose and practical inventiveness which is the American character.

Young people are moving away from feeling guilty about sleeping with somebody to feeling guilty if they are *not* sleeping with someone.

Any town that doesn't have sidewalks doesn't love its children.

If one cannot state a matter clearly enough so that even an intelligent twelve-year-old can understand it, one should remain within the cloistered walls of the university and laboratory until one gets a better grasp of one's subject matter.

There is no greater insight into the future than recognizing...when we save our children, we save ourselves

The anonymity of the city is one of its strengths as well as - carried too far - one of its weaknesses.