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It's just too egotistical to think that we are the only lifeform in the universe.

It might be arrogant to think that we're the only living creations in all of the solar systems that there are. Space is so vast.

I do believe there is life in outer space. Mathematically, there has to be, and if you believe as I do that there is a creator of the universe, then how can we be so arrogant to believe he created life here and nowhere else?

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 actually form the world at every instant, although we're not cognitively aware of that but - and there are people would argue with that to some degree.

Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people.

I think it'd be pretty unrealistic to think we're the only planet in the world with thinking beings. It's kind of a strange conceit. Especially given how many universes there must be.

I believe in a lot of astrology. I believe in aliens... I look up into the stars and I imagine: 'How self-important are we to think that we are the only life-form?'

People quite often think of the question 'Are we alone in the universe?' in terms of other civilizations out there: life forms that have reached at least our level of technological development.