Time travel may be achieved one day, or it may not. But if it is, it should not require any fundamental change in world-view, at least for those who broadly share the world view I am presenting in this book.

Is the human race a universal constructor?

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

To me quantum computation is a new and deeper and better way to understand the laws of physics, and hence understanding physical reality as a whole.

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

Despite the unrivaled empirical success of quantum theory, the very suggestion that it may be literally true as a description of nature is still greeted with cynicism, incomprehension, and even anger.

Every problem that is interesting is also soluble.