Time travel offends our sense of cause and effect - but maybe the universe doesn't insist on cause and effect.

I was only eight when Sputnik was launched, and at that age the boundary between science and fiction is pretty blurry. Whichever way the process ran, I've been a fan of science and SF ever since.

The biggest fatal flaw in most fictional portrayals of nanotech - what sends those books arcing across the room - is ignoring that the nanobots need energy to do... anything.

Science works as a way to make sense of life and the universe. Hard SF as my preferred fictional genre just feels natural.

The scope of what I have to say determines the length of what I write.

One doesn't just wander unvetted into someone else's epic interstellar future history.

Collaboration is a nice change of pace from the often solitary nature of the writer's craft.

It would help if human experts agreed on the meaning of such basic terms as intelligence, consciousness, or awareness. They don't. It's hard to build something that's incompletely defined.

The medical nanobots in my novel 'Small Miracles' tap the energy sources that the patient's own body provides. That is, they can metabolize glycerol and glucose, just as the cells in our bodies do.

The greatest riches are the gift of life, strength and wisdom.

There are times when you simply have to righteous hang on and outlast the devil.

Cosmology is a science which has only a few observable facts to work with.

Our culture says that ruthless competition is the key to success. Jesus says that ruthless compassion is the purpose of our journey.

Every member Congress is under the threat of being destroyed by the Israeli lobby.

A funeral eulogy is a belated plea for the defense delivered after the evidence is all in.

Salzburg... is a mountain town with a rushing river running right through the center, everything in the rain various shades of green and brown.

I like that free spirit where you can laugh together and argue. I love a writer's room.

Methodology is intuition reconstructed in tranquility.

Career mothers are not kidding anybody. Being a mom is the hardest job of all. You got to work to rest.