Grey's Anatomy, Season 9

Meredith:
[voice over] We do our very best, but sometimes it's just not good enough. We buckle our seatbelts, we wear a helmet, we stick to the lighted paths, we try to be safe. We try so hard to protect ourselves, but it doesn't make a damn bit of difference. Cause when the bad things come, they come out of nowhere. The bad things come suddenly, with no warning. But we forget that sometimes that's how the good things come too.