Throughout history, religious wars have always been the most brutal and cruel and merciless.

Junkies find veins in their toes when the veins in their arms collapse. Developing tars sands is the equivalent.

...the emergent capabilities bursting forth from the revolutionary advances in the life sciences are about to make us the principal agent of evolution.

What we take for granted might not be here for our children.

A majority of Trump's voters were in favor of staying in the Paris Agreement. And if you look at what's really happening in the economy, the economic argument actually is very strongly in favor of the Paris Agreement. There are now twice as many jobs in the solar industry as in the coal industry. Solar jobs are growing 17 times faster than other jobs in the U.S.

When we respond to threats immediately and take action right away, it's usually the threats that we're hard-wired to respond to, the kinds of things that our ancestors survived.

We have to use our reasoning capacity and set long-term goals based on our deepest values.