There is a very thin line between confidence and arrogance.

Grime reminds me that swimming is very gladiatorial.

There's definitely a thin line between being tasteful and tacky.

It hasn't always been a sweet ride. When I was 15, I almost hated racing in finals because I was so nervous. But as I got more experienced, I had to choose between fight and flight - and I've fought every time.

There's a thin line between to laugh with and to laugh at.

I think the rest of the world has a very wide, very slow kick. It's very simple, breaststroke. People think it's highly technical. But the more narrow, more effective and quicker you can execute it, the faster you are going to go. There's less drag, basically.