(On the energy radiated by the Sun) It's four hundred million million million million watts. That is a million times the power consumption of the United States every year, radiated in one second, and we worked that out by using some water, a thermometer, a tin, and an umbrella. And that's why I love physics.

Science is different to all other systems of thought because you dont need faith in it, you can check that it works.

An explorer of the universe is sexier than a musician.

You dig deeper and it gets more and more complicated, and you get confused, and it's tricky and it's hard, but... It is beautiful.

The fact is that Hollywood, from as early as the sixties to the present time, has ghettoized cinema into the big industry, a marketing industry. In doing this, the audiences have lost touch with the aspects of film which were to be informative and educational and even spiritual.

The story of the universe finally comes to an end. For the first time in its life, the universe will be permanent and unchanging. Entropy finally stops increasing because the cosmos cannot get any more disordered. Nothing happens, and it keeps not happening, forever. It's what's known as the heat-death of the universe. An era when the cosmos will remain vast and cold and desolate for the rest of time the arrow of time has simply ceased to exist. It's an inescapable fact of the universe written into the fundamental laws of physics, the entire cosmos will die.

We are the cosmos made conscious and life is the means by which the universe understands itself.