Summary
Highlights
The philosophy of religion differs from theology in that it questions the existence of God, unlike theology which assumes it. Philosophers require arguments for all beliefs, including religious ones, and do not accept faith alone as sufficient proof. Religious beliefs have significantly shaped history, making their philosophical examination crucial.
Philosophy of religion is not about unquestioningly accepting beliefs from upbringing, nor is it the study of religious texts as proof of their own truth. It's also distinct from religious anthropology, sociology, or psychology. Its core focus is on providing arguments for the existence of God.
Anselm of Canterbury's ontological argument, based on the definition of God as 'that than which no greater can be conceived', deductively argues for God's existence. He posits that if something is the greatest conceivable, it must exist in reality, not just in the mind, because a real existence is greater than an imaginary one.
Anselm's contemporary, Gaunilo, criticized the ontological argument by applying the same logic to prove the existence of a mythical 'Lost Island'. He argued that if Anselm's reasoning were sound, one could prove the existence of any perfect imaginary object, highlighting a flaw in the argument's structure.
Anselm's response to Gaunilo, claiming the argument only applies to 'necessary beings', committed the fallacy of begging the question by assuming God's existence. Immanuel Kant later criticized the argument by stating that 'existence is not a predicate'. Kant argued that existence is not a characteristic that can be added to define something, and therefore cannot be used to prove its reality.
John Wisdom's 'Parable of The Invisible Gardener' illustrates the issues with defining something into existence. Person A continuously adds undetectable qualities to a supposed gardener to explain why they can't be found, leading Person B to question the difference between such a gardener and no gardener at all. This parable highlights the difficulty of proving the existence of something that leaves no empirical evidence.
The episode concludes by reiterating the philosophical approach to religious belief, emphasizing the need for strong arguments even if one accepts a conclusion. Both Gaunilo and Kant, despite believing in God, found Anselm's argument flawed, underscoring that agreement with a conclusion does not validate a weak argument. The next episode will explore Thomas Aquinas's arguments for God's existence.