For millions of years, mankind lived just like the animals. Then something happened which unleashed the power of our imagination. We learned to talk and we learned to listen. Speech has allowed the communication of ideas, enabling human beings to work together to build the impossible. Mankind's greatest achievements have come about by talking, and its greatest failures by not talking. It doesn't have to be like this. Our greatest hopes could become reality in the future. With the technology at our disposal, the possibilities are unbounded. All we need to do is make sure we keep talking.

We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

I don't believe that the ultimate theory will come by steady work along existing lines. We need something new. We can't predict what that will be or when we wi…

What I have done is to show that it is possible for the way the universe began to be determined by the laws of science. In that case, it would not be necessary…

Als thai haf wryten and sayd Haf I alle in myn Inglis layd, In symple speche as I couthe, That is lightest in mannes mouthe. I mad noght for no disours, Ne for…

Words should be employed as the means, not as the end: language is the instrument, conviction is the work.

'Get out o' Mr. Fletcher's road, ye idle, lounging, little - ' 'Vagabond,' I think the woman (Sally Walkins, once my nurse,) was going to say, but she changed …