McKay: Look, this is big. This is the wheel... the lightbulb... the hot dog big.
Sheppard: Best-case scenario?
McKay: I win a Nobel Prize.
Sheppard: Worst-case scenario?
McKay: We tear a hole in the fabric of the universe -- which is much less likely to happen than the Nobel Prize. I mean, look, the risks are nothing compared to the potential benefits. Elizabeth will listen to you. I've never ask you for this before, but I think I've earned that. Trust me.