"There’s now a mystery to solve. I’ve always said that science is detective work. But at the time we started nobody knew anything at all."

"It was a flashbulb moment as they say where I just had to be underwater looking at life that way, for the rest of my life."

"There are rules, no one can escape it. If you have to fix something, you have to know what’s broken, that’s what rules provide."

"Whether it was terrestrial or aquatic, whether it was arctic or tropical, it was all working in the same way."

"There’s a sign, when you get off the airplane there: not the end of the world but you can see it from here."

"This isn’t about making the world pretty – this is about making the world productive and functional."