AIDS and malaria and TB are national security issues. A worldwide program to get a start on dealing with these issues would cost about $25 billion... It's, what, a few months in Iraq.

History as well as life itself is complicated -- neither life nor history is an enterprise for those who seek simplicity and consistency.

Forced to choose between limiting population or trying to increase food production, we chose the latter and ended up with starvation, warfare, and tyranny.

The adoption of agriculture, supposedly our most decisive step toward a better life, was in many ways a catastrophe from which we have never recovered.

We're uncomfortable about considering history as a science. It's classified as a social science, which is considered not quite scientific.

Biology is the science. Evolution is the concept that makes biology unique.

Technology has to be invented or adopted.

Rhino-mounted Bantu shock troops could have overthrown the Roman Empire. It never happened.

Human societies vary in lots of independent factors affecting their openness to innovation.

Why did human development proceed at such different rates on different continents for the last 13,000 years?

Much of human history has consisted of unequal conflicts between the haves and the have-nots.

Everyone know is, soul does it or it doesn't exist it really doesn't matter. What does it matter is that you will die soon and you will be out of the Matrix!

All your troubles, struggles, pains and suffering is worth one good thing.

You're not seeing what you're looking at.

I doubt if you can have a truly wild party without liquor.

Life is made up of moments, small pieces of glittering mica in a long stretch of gray cement.

The more we see the founders as humans the more we can understand them.

OK, let's get this mother out of here.

Capacity for love in its higher forms seems to be peculiarly human although even in humans it is still peculiar.

Films don't decide my whole life. They are just a part of who I am. What I do in my personal life should be of no concern to the filmmakers or the fans.

People, especially successful people, are habitual creatures. They're organized. This makes them productive - Gus Mitchell