I engaged in behavior which was regrettable and demonstrated bad judgment. I'm 23 years old and despite the successes I've had in the pool, I acted in a youthful and inappropriate way, not in a manner people have come to expect from me. For this, I am sorry. I promise my fans and the public it will not happen again.

It's not how you start, but it's how you finish.

This is my 20th year in the sport. I've known swimming and that's it. I don't want to swim past age 30; if I continue after this Olympics, and come back in 2016, I'll be 31. I'm looking forward to being able to see the other side of the fence.

Dream as big as you can dream, and anything is possible.

Water has always been a large part of my life, so for me now, being a father with another child on the way, I'm just teaching some of the small things I've been able to learn - and passing that onto the younger generation. Small things like turning your faucet off when you brush your teeth, not taking a 30-minute shower when you really don't need to. So I want to teach the younger generation to spread the message and make a difference. I'm almost more excited to do this than I was to swim.

I got the stamina. I can close.

I won't predict anything historic. But nothing is impossible.