Richard Weaver said, 'Ideas have consequences'. Weaver taught English at the University of Chicago, but he was also an intellectual historian and philosopher of sorts. The thesis, in its most basic form, is correct. What people believe about how the world 'is' will affect how they live in the world or our 'worldview' is not just a set of disembodied ideas, but has consequences on how we live. Taken as a large meta-narrative of human history, it could be argued that the thesis is a bit more tenuous, but I will leave that to intellectual historians.