As for reading theology - I was reading GK Chesterton a couple of weeks ago. The guy's quite smart, but his ideas are dire. The matter of your religion is a lifestyle choice dressed up as a discussion about some sort of spiritual reality. I believe this dirty little (self-)deception is at the heart of all theology and that's why it shouldn't be taken seriously. But I have read a bit of theology and I am aware of what transubstantiation is. Is it relevant to Capital beyond following Marx's metaphors? I don't think so.