So now you must choose... Are you a child who has not yet become world-weary? Or are you a philosopher who will vow never to become so? To children, the world and everything in it is new, something that gives rise to astonishment. It is not like that for adults. Most adults accept the world as a matter of course. This is precisely where philosophers are a notable exception. A philosopher never gets quite used to the world. To him or her, the world continues to seem a bit unreasonable - bewildering, even enigmatic. Philosophers and small children thus have an important faculty in common. The only thing we require to be good philosophers is the faculty of wonder?

The reasonable man adapts himself to the world: the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.

We're understanding what Obama is. He is the great teacher. He is this guy that stands above everybody. There's some condescension in it but he stands above everybody and says 'Now listen. You people have to stop blaming each other unreasonably. You have to get along here and I am going to show you the way.' It is a pretty brave role in many ways.

It does not seem to me that the steps which would be needed to make Britain - and others - more comfortable in their relationship in the European Union are inherently so outlandish or unreasonable.

Reasonable men adapt to the world around them unreasonable men make the world adapt to them. The world is changed by unreasonable men.

He's a good tough producer yes. But I don't think that he's unreasonable unless he feels threatened. And when somebody's in your home I think everybody in the home gets threatened.

Statutes authorizing unreasonable searches were the core concern of the framers of the 4th Amendment.

Do you suppose there is any living man so unreasonable that if he found himself stricken with a dangerous ailment he would not anxiously desire to regain the blessing of health?

In the light of our culture these are not unreasonable questions and tactics but if once again we try to see the lens through which we look we can see that there is far too great an emphasis placed on the future.

We are at the very beginning of time for the human race. It is not unreasonable that we grapple with problems. But there are tens of thousands of years in the future. Our responsibility is to do what we can learn what we can improve the solutions and pass them on.

It is as impossible to withhold education from the receptive mind as it is impossible to force it upon the unreasoning.

It is therefore not unreasonable to suppose that some portion of the neglect of science in England may be attributed to the system of education we pursue.