It's easier to change what you do than people think it is. If you don't change, your field changes around you.

We haven't been able yet to determine in terms of genes what makes a human being a human and not another mammal.

The human's place in the universe will be set in the scheme of evolution, the product of our biological inheritance.

Biology will relate every human gene to the genes of other animals and bacteria, to this great chain of being.

I have the same sense of the power and virtue of knowledge that some people get from a religious background.

The community as a whole doesn't listen patiently to critics who adopt alternative viewpoints. Although the great lesson of history is that knowledge develops through the conflict of viewpoints.

The virtues of science are skepticism and independence of thought.