LectureThe best evidence we have that time travel is not possible, and never will be, is that we have not been invaded by hordes of tourists from the future.Stephen Hawking1991★ 5.1
Scientific literatureWhat is it that breathes fire into the equations and makes a universe for them to describe?...Why does the universe go to all the bother of existing?Stephen HawkingA Brief History of Time · 1988★ 3.6
Scientific literatureIf we find the answer to that, it would be the ultimate triumph of human reason-for then we would know the mind of God.Stephen HawkingA Brief History of Time · 1988★ 1.9
Scientific literatureIn effect, we have redefined the task of science to be the discovery of laws that will enable us to predict events up to the limits set by the uncertainty principle.Stephen HawkingA Brief History of Time · 1988★ 1.9
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