A lot of philosophy is bull***t, but a lot of it is what we write songs about too. And it's organizing your thoughts, organizing your intellect.

Most songwriters who have been lucky enough to have their song on the radio or be heard widely don't know anything about science. The best songs have a strong dose of metaphor. Most songs about science don't have that. Like 'She Blinded Me With Science.' It's a stupid song, no offense to Thomas Dolby.

Society has to be structured such that there are checks and balances, so that it can't be manipulated, for instance, for the profit of just some multinational company who's going to get rich on trying to legislate the environment.

I'm a biologist, so... Which I think should be mandatory. Biology should be mandatory. Mathematics? They say we don't know enough about math and science. Well we don't know enough about science and particularly biology, which is such a huge field.

I'm saying that there were many great naturalists before Darwin's time who were very pious people and who knew more about nature than most of us. These were great naturalists; people I would admire for their knowledge of natural science given the time.

A fossil is so powerful. It's moving. This is my ancestor. The naturalist is moved by the fossil... not the cross.

Humans impart meaning and purpose to almost all aspects of life. This sense of meaning and purpose gives us a road map for how to live a good life. This guidance emerges spontaneously from the interactions of human beings living in societies and thinking together about how best to get along. It doesn't require a god or sacred text.