"The quest for other, and better, forms of life, society, technology, ethics, and law may not reveal that they are act…"

"Our sun is one of 100 billion stars in our galaxy. Our galaxy is one of billions of galaxies populating the universe.…"

"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."

"The only thing that scares me more than space aliens is the idea that there aren't any space aliens. We can't be the …"

"Any entity – no matter how many tentacles it has – has a soul."

"If, for example, tomorrow an expedition of Martians came to us here and one said ‘I want to be baptised!’, what would…"

"If a visitor from outer space were to come to know human beings on this earth .... at work and play, and without know…"

"A Man that is of Copernicus’s Opinion, that this Earth of ours is a Planet, carry’d round and enlighten’d by the Sun,…"

"But who shall dwell in these worlds if they be inhabited? … Are we or they Lords of the World? … And how are all thin…"

"Man knows at last that he is alone in the indifferent immensity of the universe, whence which he has emerged by chance."