Quotes from Brian Greene

Einstein comes along and says, space and time can warp and curve, that's what gravity is. Now string theory comes along and says, yes, gravity, quantum mechanics, electromagnetism — all together in one package, but only if the universe has more dimensions than the ones that we see.

I was holding [my four-year-old daughter] and I said, 'Sophia, I love you more than anything in the universe.' And she turned to me and said, 'Daddy, universe or multiverse?'

Sometimes nature guards her secrets with the unbreakable grip of physical law. Sometimes the true nature of reality beckons from just beyond the horizon.

Science is the process that takes us from confusion to understanding...

When kids look up to great scientists the way they do to great musicians and actors, civilization will jump to the next level

The boldness of asking deep questions may require unforeseen flexibility if we are to accept the answers.

Cosmology is among the oldest subjects to captivate our species. And it's no wonder. We're storytellers, and what could be more grand than the story of creation?

I have long thought that anyone who does not regularly - or ever - gaze up and see the wonder and glory of a dark night sky filled with countless stars loses a sense of their fundamental connectedness to the universe

Understanding requires insight. Insight must be anchored.

Physicists have come to realize that mathematics, when used with sufficient care, is a proven pathway to truth.

things are the way they are in our universe because if they weren't, we wouldn't be here to notice.

Sometimes attaining the deepest familiarity with a question is our best substitute for actually having the answer.

All you are is a bag of particles acting out the laws of physics. That to me is pretty clear.

Assessing existence while failing to embrace the insights of modern physics would be like wrestling in the dark with an unknown opponent.

quantum mechanics—the physics of our world—requires that you hold such pedestrian complaints in abeyance.

Free will is the sensation of making a choice. The sensation is real, but the choice seems illusory. Laws of physics determine the future.

You should never be surprised by or feel the need to explain why any physical system is in a high entropy state.

But, as Einstein once said, "For we convinced physicists, the distinction between past, present, and future is only an illusion, however persistent."5

Gravity is matter's sugar daddy.

things are the way they are in our universe because if they Weren't, we would not be here to notice.

When you realize that quantum mechanics underlies all physical processes, from the fusing of atoms in the sun to the neural firings that constitutes the stuff of thought, the far-reaching implications of the proposal become apparent. It says that there's no such thing as a road untraveled. Yet each such road—each reality—is hidden from all others.

As Feynman once wrote, "[Quantum mechanics] describes nature as absurd from the point of view of common sense. And it fully agrees with experiment. So I hope you can accept nature as She is—absurd.

For string theory to make sense, the universe should have nine spacial dimensions and one time dimension, for a total of ten dimensions.

A watch worn by a particle of light would not tick at all. Light realizes the dreams of Ponce de Leon and the cosmetics industry: it doesn't age.