I am really sobered by what's happening to ecosystems around our planet and to the wildlife that is to be found there.

I think a human animal is far more wild and unpredictable and dangerous and destructive than any other animal.

Today, I’m a conservationist because I believe that my species doesn’t have the right or option to determine the fate of other species, even ones that inspire fear in us.

We know that when push comes to shove, [we can] drive ourselves to save our planet.

What drives me is that moment of discovery. I love the unknown.

I love people who have died trying to save wildlife. When I see that passion, that gives me hope.

I'm glad I'm inspiring somebody.

We live in a time where we have more extinction happening on our planet than since the dinosaurs were wiped out 50 million years ago.

I'm a biologist. At my core, I'm a naturalist.

Running is my addiction. It's always present. I'm constantly thinking about my next run.

In my heart, ever since I [was] a little kid, I've been an explorer.

… real life hardly ever unfolds the way we’d like it to, not like in a story.

Strait is the gate and narrow is the way which leadeth unto life.

Millions of people in nearly 80 countries still live in fear of landmines and explosive remnants of war, which take an unacceptable toll on lives and limbs, and people's livelihoods

To a mother, a child is everything; but to a child, a parent is only a link in the chain of her existence.

Death is the gate of life.

Those who know Notre Dame, no explanation’s necessary. Those who don’t, no explanation will suffice.

History is full of people who went to prison or were burned at the stake for proclaiming their ideas. Society has always defended itself.

A good thing is I've been playing tennis I think every day for the last two months. I really haven't had a day off. I've been doing things that I did used to do.

Overthinking is often a product of underdoing.

I'm an expert in higher level math. You + God = Enough