Man is embedded in nature.

The greatest single achievement of nature to date was surely the invention of the molecule DNA.

Animals, even plants, lie to each other all the time, and we could restrict the research to them, putting off the real truth about ourselves for the several centuries we need to catch our breath. What is it that enables certain flowers to resemble nubile insects, or opossums to play dead, or female fireflies to change the code of their flashes in order to attract, and then eat, males of a different species?

Society evolves not by shouting each other down, but by the unique capacity of unique, individual human beings to comprehend each other.

The literature has become too vast to comprehend...It is...difficult to grasp even for workers in closely neighboring fields. ...There is much more reliance on word of mouth for the transmission of scientific data...gossip.

I don't think that the permanence of the individual human soul is an indispensable part of religious thought.

It is not a simple life to be a single cell, although I have no right to say so, having been a single cell so long ago myself that I have no memory at all of that stage of my life.