Clearly, some creative thinking is badly needed if...

The way life manages information involves a logical structure that differs fundamentally from mere complex chemistry. Therefore chemistry alone will not explain life's origin, any more than a study of silicon, copper and plastic will explain how a computer can execute a program.

Perhaps the best motivation for going to Mars is political. It is obvious that no single nation currently has either the will or the resources to do it alone, but a consortium of nations and space agencies could achieve it within 20 years.

Should we find a second form of life right here on our doorstep, we could be confident that life is a truly cosmic phenomenon. If so, there may well be sentient beings somewhere in the galaxy wondering, as do we, if they are not alone in the universe.

We live in an age when to be young and to be indifferent can be no longer synonymous. We must prepare for the coming hour. The claims of the Future are represented by suffering millions and the Youth of a Nation are the trustees of Posterity.

This is the first age that's ever paid much attention to the future, which is a little ironic since we may not have one.

High expectations weren't nurtured in my neck of nowhere back then - children weren't fawned over from an early age as 'gifted' and groomed for a prizewinning future self-esteem was considered something you had to pick from the garden yourself.

A great source of calamity lies in regret and anticipation therefore a person is wise who thinks of the present alone, regardless of the past or future.

My view is that at a younger age your optimism is more and you have more imagination etc. You have less bias.

Being an actor is the loneliest thing in the world. You are all alone with your concentration and imagination, and that's all you have.

I had a very happy childhood, but I wasn't that happy a child. I liked being alone and creating characters and voices. I think that's when your creativity is developed, when you're young. I liked the world of the imagination because it was an easy place to go to.

I have a huge, active imagination, and I think I'm really scared of being alone because if I'm left to my own devices, I'll just turn into a madwoman.