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Now, since the time of Newton there had been a debate about whether light was a wave---that is, a traveling disturbance in some background medium---or a particle, which travels regardless of the presence of a background medium. The observation of Maxwell that electromagnetic waves must exist and that their speed was identical to that of light ended the debate: light was an electromagnetic wave.

— Lawrence M. Krauss

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More quotes by Lawrence M. Krauss

If you have nothing in quantum mechanics, you will always have something.

Science simply forces us to revise what is sensible to accommodate the universe, rather than vice versa.

It is a shame when nonsense can substitute for fact with impunity.

There is a maxim about the universe which I always tell my students: That which is not explicitly forbidden is guaranteed to occur.

Whatever the evolutionary basis of religion, the xenophobia it now generates is clearly maladaptive.

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