“Truth is a quality of reality. It has nothing to do with what I believe. Truth, when it comes to empirical issues, is an objective thing. Whether something is true or not is independent of whether I think it is true or not, and a lot of people confuse this. People say that we cannot trust science because once-upon-a-time scientists held it true that the earth was flat; that's not correct. It was never true that the earth was flat, even if people believed it.”