"We have no reason to think that climate change is harmful if you look at the world as a whole. Most places, in fact, are better off being warmer than being colder. And historically, the really bad times for the environment and for people have been the cold periods rather than the warm periods."

"Technology is a gift of God. After the gift of life it is perhaps the greatest of God's gifts. It is the mother of civilizations, of arts and of sciences."

"It has become part of the accepted wisdom to say that the twentieth century was the century of physics and the twenty-first century will be the century of biology."

"What the world needs is a small, compact, flexible fusion technology that could make electricity where and when it is needed. The existing fusion program is leading to a huge source of centralized power, at a price that nobody except a government can afford."

"What business has science and capitalism got, bringing all these new inventions into the works, before society has produced a generation educated up to using them!"

"Science fiction, to me, has not only things that wouldn't happen, but other planets."

"I could write historical fiction, or science fiction, or a mystery but since I find it fascinating to research the clues of some little know period and develop a story based on that, I will probably continue to do it."

"All one's inventions are true, you can be sure of that. Poetry is as exact a science as geometry."