"I'm usually a mellow, go-with-the-flow person, except when someone tells me I should do something. Then I get stubborn. If they don't back off, I get this horrible rage and want to kill them. When I was four and my mom would send me to my room, I'd get so mad I'd go outside and bang my head on the sidewalk."

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If the rate of expansion one second after the Big Bang had been smaller by even one part in a hundred thousand million million, it would have recollapsed before it reached its present size. On the other hand, if it had been greater by a part in a million, the universe would have expanded too rapidly for stars and planets to form.

— Stephen Hawking