There aren't just bad people that commit genocide; we are all capable of it. It's our evolutionary history.

I have a feeling that climate change may be an issue as severe as a war. It may be necessary to put democracy on hold for a while.

I'm a scientist, not a theologian. I don't know if there is a God or not. Religion requires certainty.

No one who has experienced the intense involvement of computer modeling would deny that the temptation exists to use any data input that will enable one to continue playing what is perhaps the ultimate game of solitaire.

An inefficient virus kills its host. A clever virus stays with it.

I suspect any worries about genetic engineering may be unnecessary. Genetic mutations have always happened naturally, anyway.

The big threat to the planet is people: there are too many, doing too well economically and burning too much oil.