One in 200 stars has habitable Earth-like planets surrounding it - in the galaxy, half a billion stars have Earth-like planets going around them - that's huge, half a billion. So when we look at the night sky, it makes sense that someone is looking back at us.

Michio Kaku

I believe one of the greatest human failings is to prefer to be right than to be effective. Political correctness is always obsessed with how right it is without thinking how effective it might be. I do relish transgression and I deeply and instinctively distrust conformity and orthodoxy.

Stephen Fry