Science Is Beautiful When It Makes Simple

I Think [contacting An Alien Civilization] Would Be A Disaster. The Extraterrestrials Would Probably Be Far In Advance Of Us. The History Of Advanced Races Meeting More Primitive People On This Planet Is Not Very Happy, And They Were The Same Species. I Think We Should Keep Our Heads Low.

I Don't Think The Human Race Will Survive The Next Thousand Years, Unless We Spread Into Space. There Are Too Many Accidents That Can Befall Life On A Single Planet. But I'm An Optimist. We Will Reach Out To The Stars.

There Are No Black Holes - In The Sense Of Regimes From Which Light Can't Escape To Infinity. There Are However Apparent Horizons Which Persist For A Period Of Time.

Mankind's Greatest Achievements Have Come About By Talking And Its Greatest Failures By Not Talking. It Doesn’t Have To Be Like This.

My First Popular Book, 'a Brief History Of Time,' Aroused A Great Deal Of Interest, But Many Found It Difficult To Understand.