“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.”

“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.”

— Brian Greene