“The melded nature of space and time is intimately woven with properties of light speed. The inviolable nature of the speed of light is actually, in Einstein's hands, talking about the inviolable nature of cause and effect.”

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Meaning

This frames Einstein’s work as more than abstract theory, it points to a change in how reality itself is understood. The quote reads as saying that light speed is not just a number, but a boundary that holds cause and effect together. It lands when a hard scientific idea is being translated for someone who needs the larger picture, not the equations.

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Original Language & Translation

Originally said in English.

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About Brian Greene

American physicist, professor, and science festival chairman

Brian Greene is an American physicist and professor of physics and mathematics at Columbia University. He is known for his work on string theory and for co-founding the World Science Festival in 2008. He directs Columbia’s Center for Theoretical Physics and serves as chairman of the festival. Greene also co-discovered mirror symmetry, a relation between two different Calabi-Yau manifolds, and described the flop transition and the conifold transition, showing how topology can change smoothly in string theory.

More from Brian Greene (114 quotes) →

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Books by Brian Greene

The Elegant Universe

2000

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The Fabric of the Cosmos

2004

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The Hidden Reality

2011

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