"All ideas obey the same epistemology. it's a mistake to give any of them precedence over any others." David Deutsch

"We make our progress through explanatory conjectures and criticism. And, as Popper says, by letting our ideas 'die in our place'". David Deutsch

"At present, I see nothing in our existing best theories of biology that suggests that there is a law of physics that says lifetime has to have a particular finite limit." David Deutsch

"Without error-correction all information processing, and hence all knowledge-creation, is necessarily bounded. Error-correction is the beginning of infinity." David Deutsch

"The best argument against moral equivalency is that denying that one culture is better than another entails denying that the future state of one's own culture can be better than the present. It denies the possibility of progress, is hostile to it, and sides with evil."

"Conjectures are the products of creative imagination. But the problem with imagination is that it can create fiction much more easily than truth." David Deutsch

"Once an irrational idea is embedded in a culture, it creates psychological pressure on any member of that culture not to allow themselves to question that idea: people whose respect you psychologically depend on will despise you if you do. So an anti-rational meme emerges."

"We understand the fabric of reality only by understanding theories that explain it. And since they explain more than we are immediately aware of, we can understand more than we are immediately aware that we understand." David Deutsch, The Fabric of Reality. ––Chapter 1: The

"Empiricism miscasts science as an automatic, non-creative process. And art, though acknowledged as ‘creative’, has often been seen as the antithesis of science, and hence irrational, random, inexplicable – and hence unjudgeable, and non-objective. But if beauty is objective,

"Just as rational memes evolve towards deep truths, anti-rational memes evolve away from them." David Deutsch, The Beginning of Infinity. —Chapter 15: The Evolution of Culture.

"We make our progress through explanatory conjectures and criticism. And, as Popper says, by letting our ideas 'die in our place'." David Deutsch

"An optimistic civilization is open and not afraid to innovate and is based on traditions of criticism." David Deutsch

"The tradition of criticism is responsible for moral progress in societies that best institutionalize criticism." David Deutsch

"Science is a way of dealing with theories regardless of whether or not one believes them." David Deutsch