Tim Cahill

I have no problem with the adventure travel movement. It makes better, more sensitive people. If you get people diving on a coral reef, they're going to become more respectful of the outdoors and more concerned with the threats that places like that face and they're going to care more about protecting them than they would have before.

A lot of the physical flirtation with fear I did early on in my career, when I was a much younger person - stuff I wouldn't do now. But I was very interested in the mechanics of risk and fear in those days. And I found out fear pretty much always feels the same, whether it's doing a rock climb or speaking in front of an audience.

The price of diamonds can vary greatly depending on size, cut, color, and other factors, including whether they have a history. But because of the rarity of blue boron diamonds, they often fetch more money than gems of similar quality.

What I look for when I see a piece of art for the first time is some kind of emotional, intellectual experience, that's a combination of both of those things and is informed by my knowledge and something new that I see the artist doing.