Science can explain the universe without the need for a Creator.

Plagiarism saves time.

Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.

Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it.

With genetic engineering, we will be able to increase the complexity of our DNA, and improve the human race. But it will be a slow process, because one will have to wait about 18 years to see the effect of changes to the genetic code.

If the government is covering up knowledge of aliens, they are doing a better job of it than they do at anything else.

Time travel was once considered scientific heresy, and I used to avoid talking about it for fear of being labelled a 'crank.'