That rooms in our house would sometimes smell like piss. I think I'll leave it at that. It only goes downhill from there.
That I'd be forced to pursue my dreams. The old saw about children learning from what they see (rather than what they're told) is true. If I tell my kids they can do anything they dream, I'd damn well better be working on my dreams, too.
That I'm not as observant as I like to think. Claire on Rachel being pregnant: "Your butt is getting big."
That doing nothing is beautiful. My wife and I share a Google Calendar to keep track of everything we schedule. When it's empty on a Friday, Saturday or Sunday, I feel like the clouds have parted and a ray of golden sunlight is alighting on my breast.
That puddles were meant for playing. Us grown-ups have a way of sucking joy out of everything. We moan and pout and pooh-pooh when it's raining. My kids run for straight the puddles. And I hope they never stop.