A lot of the letters that are coming in - a lot of them are queries or comments - are one sentence long... These are from Twitter. And if you look at the nature of those one sentence letters, most of the time it's something that came to somebody's mind - somebody walking down the street had a thought and sent it out. If they thought about it for two minutes they would not have sent it.

No use in waiting, we can all work hard to bring about changes.

Every wave of immigrants who came [to America] were treated pretty badly, but when they all finally became integrated, all of us became Anglo-Saxons.

One thing that you and I know is language. Another thing that you and I know is how objects behave in perceptual space. We have a whole mass of complex ways of understanding what is the nature of visual space. A proper part of psychology ought to be, and in recent years has been, an effort to try to discover the principles of how we organize visual space. I would say that the same is true of every domain of psychology, of human studies.

Our minds are specifically adapted to developing certain theories, and we have a science if the theories that are available to our minds happen to be close to true. Well, there is no particular reason to suppose that the intersection of true theories and theories that are accessible to the mind is very large. It may not be very large.

No one is concerned with Central America anymore. If a million people are facing starvation in northern Nicaragua and Honduras, it's none of our business. Few people even recognize that this situation is in part an outgrowth of US policies going back to the 1980's. Nobody is concerned because Nicaragua is technically stable.

We have to be irrational and vindictive, because that's going to frighten people. And we have to maintain this for years. And then we'll be able to carry out the actions that we want to carry out.