"We have two lives; The soul of man is like the rolling world, One half in day, the other dipt in night; The one has music and the flying cloud, The other, silence and the wakeful stars."

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What binds us to space-time is our rest mass, which prevents us from flying at the speed of light, when time stops and space loses meaning. In a world of light there are neither points nor moments of time; beings woven from light would live "nowhere" and "nowhen"; only poetry and mathematics are capable of speaking meaningfully about such things.

— IU?. I. Manin