“Being a scientist means that you should be able to put your faith to the test, and be willing to surrender it should evidence so require. But it does not mean we have no beliefs. In fact, the very discipline of science is based on the belief that the world is comprehensible, and even more audaciously, that it is mathematically describable. The thing about scientific beliefs is that they are not arbitrary. They’re not just random opinions we plucked out of the sky; we came to them through observation and experience, and so far, these beliefs have always been vindicated.”