The solutions like freezing zygotes, fertilized eggs, of all kinds of animals and so on, or keeping them in zoos and having arboreta where we have trees, all these things have been promoted. Even getting the complete genetic code of various fishes so we can let them pass away and then we'll pull them back. That is science fiction run amok.

We don't know nearly enough about the complexities of Nature. If we think we can eliminate natural ecosystems and substitute prosthetic devices, i.e. clean air or water with fusion energy - we are kidding ourselves.

In science, obsessiveness under psychological control can be a virtue.

In a purely technical sense, each species of higher organism-beetle, moss, and so forth, is richer in information than a Caravaggio painting, Mozart symphony, or any other great work of art.

[Bacteria are the] dark matter of the biological world [with 4 million mostly unknown species in a ton of soil].

To the extent that philosophical positions both confuse us and close doors to further inquiry, they are likely to be wrong.

I see no way out of the problems that organized religion and tribalism create other than humans just becoming more honest and fully aware of themselves.