Faith is an evil precisely because it requires no justification and brooks no argument.

The world and the universe is an extremely beautiful place, and the more we understand about it the more beautiful does it appear.

Faith is the lack of evidence, and it shouldn't be that difficult to convince people that the right reason to believe something is that there is evidence for it. People do not innately go for this view, but nevertheless it is not that difficult to teach.

Like computer viruses, successful mind viruses will tend to be hard for their victims to detect. If you are the victim of one, the chances are that you won't know it, and may even vigorously deny it.

It is an essential part of the scientific enterprise to admit ignorance, even to exult in ignorance as a challenge to future conquests.

There is something infantile in the presumption that somebody else has a responsibility to give your life meaning and point… The truly adult view, by contrast, is that our life is as meaningful, as full and as wonderful as we choose to make it.

Some people find clarity threatening. They like muddle, confusion, obscurity. So when somebody does no more than speak clearly it sounds threatening.