We have six-and-a-half-billion people on the planet, going rapidly towards seven. We're going to need a lot of inventiveness about how we use water and grow crops.

India has the opportunity to be a leader in genetic engineering, It has institutions that no other country has.

We need to continue to decrease the growth rate of the global population; the planet can't support many more people.

We wouldn't think of going to our doctor and saying 'Treat me the way doctors treated people in the 19th Century', and yet that's what we're demanding in food production.

If there are more and more environmental refugees, they are going to end up on your doorstep too.

There are probably already too many people on the planet.

If everybody switched to organic farming, we couldn't support the earth's current population - maybe half.

Weeds do become resistant to herbicides, and it needs to be managed with multiple herbicides.

The influence of a science adviser is only as good as ears open to that science advice.

Civilization depends on our expanding ability to produce food efficiently, which has markedly accelerated thanks to science and technology.

For me science is not different from art, except in the one small, crucial detail that experiments speak their own truths, not ours.

One says the things which one feels the need to say, and which the other will not understand: one speaks for oneself alone.

You can't really be strong until you can see a funny side to things.

The lie detector didn’t react to anything I said, but I wouldn’t dare smile.

Diversity is valued, and it is prized. We learn to appreciate each other and each other's struggles. From diversity, we draw our enormous and our lasting strength.

I don't believe in war, I believe in the principle of deterrence.

When I care about black liberation, it is because I care about white liberation.

You know, my point in being an actor is to get people to believe that this is not about me, but something else.

We cannot fulfill that purpose [environmentalism] if we are heaping contempt on God's creation.

Skepticism is an important historical tool. It is the starting point of all revision of hitherto accepted history.

The interviewer always learns something new from the interviewee. It opens up your mind to new ideas and the vast multiplicity of human experience.