If you believe good and bad are real, then you must also believe there is a God — if you want to think clearly about it, that is.

In this short video Peter Kreeft, professor of philosophy at Boston University, explains how that must be so. This isn’t about doing good or evil according to whether you believe in God. It’s about whether good and evil really exist, and whether there really is a God.

If you believe in God, this video explains one of the best ways you can be confident your belief is true.

If not, then Professor Kreeft has two questions for you:

Do you believe some actions can really, actually be good and others can really be bad?

If so … then how?

Without God, the answer is harder than you might think …