My first popular book, 'A Brief History of Time,' aroused a great deal of interest, but many found it difficult to understand.

Succeed in spite of management.

Scientists have become the bearers of the torch of discovery in our quest for knowledge.

Humanities deepest desire for knowledge is justification enough for continuing our quest. and our goal is nothing less than a complete description of the universe we live in.

As those who have seen Jurassic Park will know, this means a tiny disturbance in one place, can cause a major change in another. A butterfly flapping its wings can cause rain in Central Park, New York. The trouble is, it is not repeatable. The next time the butterfly flaps its wings, a host of other things will be different, which will also influence the weather. That is why weather forecasts are so unreliable.

There ought to be something very special about the boundary conditions of the universe and what can be more special than that there is no boundary?

The real challenge is to work out what aliens might actually be like.