Why is there a world, a cosmos, something, anything instead of absolutely nothing at all? If nothing existed, there would be nothing to explain. That anything exists demands some kind of explanation. Of all the big questions, this is the biggest. Why anything? Why not nothing? What can we learn from the absence of nothing?

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Alan Harvey Guth is an American theoretical physicist and cosmologist. He is currently serving as Victor Weisskopf Professor of Physics at the Massachusetts Institute of Technology.

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Closer to Truth, hosted by Robert Lawrence Kuhn, presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.