I myself believe that there will one day be time travel because when we find that something isn't forbidden by the over-arching laws of physics we usually eventually find a technological way of doing it.

No precautions, and no precautionary principle, can avoid problems that we do not yet foresee. We need a stance of problem-fixing, not just problem-avoidance.

Science is objective. And in my view we cannot take any experimental results seriously except in the light of good explanations of them.

If we can't program it, we can't understand it.

The overwhelming majority of theories are rejected because they contain bad explanations, not because they fail experimental tests.

Our best theories are not only truer than common sense, they make more sense than common sense...

Humans may or may not have cosmic significance, and if they do, it will be by hitching a ride on the objective centrality of knowledge in the cosmic scheme of things.