Is philosophy dead, as Hawking claims? Are scientists the new (self-appointed) torch-bearers of truth? Is the so-called M-theory the "only viable candidate" for a complete 'theory of everything'? Watch Lennox's response in this exclusive full-length video.
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One butterfly enthusiast in attendance was heard to say, "Take even the most hardened scientist to see the butterflies in Mexico, and they will be moved to tears."
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