Philosophy of Religion

This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.

In 1078, the monk Anselm of Canterbury proposed an argument that has never quite left philosophy alone: God, he wrote, is that than which nothing greater can be conceived, and a being that exists only in the mind is not as great as one that exists in reality, so the very concept of God requires that God exist. Critics attacked it almost immediately. A fellow monk, Gaunilo, objected that the same reasoning would prove a perfect island must exist simply because we can conceive of one, which seemed to prove too much. Centuries later Kant offered the more lasting objection: existence, he argued, is not a property that makes a concept greater the way wisdom or power would, so packing existence into the definition of a perfect being does not actually add anything to be greater by. The argument is called ontological because it tries to move from a concept straight to a claim about what exists, without appeal to evidence or observation, which is exactly what makes it so unusual among arguments for God: every other classical argument, cosmological, teleological, moral, starts from some feature of the observed world and reasons toward a cause or explanation. The ontological argument starts from an idea alone. That is also why it keeps returning. Each time philosophy develops sharper tools for reasoning about concepts, meaning and possibility, someone tries the argument again, most famously Alvin Plantinga's twentieth century modal version, which recasts greatness in terms of possible worlds rather than mere conception. Whether any version succeeds remains a live, unsettled dispute, which is itself instructive: an argument nearly a thousand years old, refined and attacked in every century since, is a working example of what philosophy of religion actually is, the sustained, technical testing of whether reason alone can reach a conclusion that matters enormously to how people live.

This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.

The problem of evil has been argued in something close to its classic form for as long as philosophy of religion has existed as a discipline: if God is willing to prevent evil but not able, God is not all-powerful; if able but not willing, God is not good; if both willing and able, why is there evil at all. Philosophy of religion has spent the centuries since sorting that single question into sharper and sharper versions. The logical problem of evil argues that the mere existence of any evil is strictly incompatible with an all-powerful, all-knowing, perfectly good God, a claim most contemporary philosophers of religion now think theists can answer, chiefly through free will defenses, arguing that a world with genuinely free creatures, capable of real moral choice, is worth the risk of the evil some of them will choose, even for a God who could have made a world without that risk. The harder version, the evidential problem of evil, concedes that evil is not strictly incompatible with God's existence but argues that the sheer scale and apparent pointlessness of some suffering, a fawn dying slowly and unseen in a forest fire is the standard example, counts as strong evidence against God's existence even if it does not disprove it outright. Responses range from skeptical theism, the claim that human minds have no good reason to expect they would understand God's reasons even if they exist, to soul-making theodicies, which argue that a world containing real hardship is necessary for the kind of moral and spiritual growth a world of comfort could not produce. None of these responses has settled the question, and philosophy of religion treats that as the honest state of the field rather than a defect in it: the problem of evil is the branch's clearest case of an argument that both sides keep sharpening rather than one side simply winning.