Brian Greene Quotes

Gravity is more powerful where there's more stuff.

The universe is composed of matter, and, as a system, is sustained by motion. Motion is not a property of matter, and without this motion the solar system could not exist.

Two forces rule the universe: light and gravity.

Weight is caused by one element being situated in another; and it moves by the shortest line towards its centre, not by its own choice, not because the centre draws it to itself, but because the other intervening element cannot withstand it.

The abstract analysis of the world by mathematics and physics rests on the concepts of space and time.

The black holes of nature are the most perfect macroscopic objects there are in the universe: the only elements in their construction are our concepts of space and time.

Dark energy is incredibly strange, but actually it makes sense to me that it went unnoticed, because dark energy has no effect on daily life, or even inside our solar system.

We know there is gravity because apples fall from trees. We can observe gravity in daily life. If we could throw an apple to the edge of the universe, we would observe it accelerating.

I love physics.

Gravity is a habit that is hard to shake off.

Physics has the cutest words.

We account for one-sixth of the forces of gravity we see in the universe. There is no known objects accounting for most of the effective gravity in the universe. Something is making stuff move that is not anything we have ever touched.

We get the exciting result that the total energy of the universe is zero. Why this should be so is one of the great mysteries - and therefore one of the important questions of physics. After all, what would be the use of studying physics if the mysteries were not the most important things to investigate?

I like physics. I think it is the best science out of all three of them, because generally it's more useful. You learn about speed and velocity and time, and that's all clever stuff.

From a scientific point of view, our mission is to seek answers to the fundamental questions about the universe. Many are open - we don't know about dark matter, which accounts for a quarter of the universe's matter, nor do we know why there's antimatter.

I've always been fascinated by physics and cosmology. It gets more and more scary the older you get.

We have this interesting problem with black holes. What is a black hole? It is a region of space where you have mass that's confined to zero volume, which means that the density is infinitely large, which means we have no way of describing, really, what a black hole is!

Physics is the most basic part of science and, of course, math. It gives you insight into everything - a foundation, I should say, to understand nature and the universe.

The majority of the world is empty space. Empty space, empty space, empty space. All that we see in the world, the life, the animals, plants, people - it's all empty space. That's amazing!

Dark energy is perhaps the biggest mystery in physics.

What really made me think about space and begin to think about ways to use it was Einstein's statement that there are no fixed points in space. Everything in the universe is moving all the time.

I am deeply impressed with the way dark matter has explained cosmological observations.

You can't argue with physics, mate.

As an astrophysicist, my research work involves mapping dark matter, the elusive substance that accounts for about a quarter of our universe.

Gravity is more suggestive than convincing.