"As many have discovered, it is entirely possible (although not particularly desirable) to love two people with all your heart. It is entirely possible to long for two lives, to feel that one life can't come close to containing it all."

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In this way, Edwin Hubble worked out the distances to nine different galaxies. We now know that our galaxy is only one of some hundred thousand million that can be seen using modern telescopes, each galaxy itself containing some hundred thousand million stars.

— Stephen Hawking