What is the relationship between science and religion?
The primary focus will be on the metaphysical question of whether God exists
Epistemological questions
Questions concerning the nature of knowledge and rational belief
Epistemological questions in philosophy of religion
Whether religious beliefs can be rational or can constitute knowledge
Whether faith can be rational or justified
Metaphysical questions
Questions about which things exist and what their natures are
Metaphysical questions in philosophy of religion concern the existence of God or souls or about the nature of God
Omni-God
A perfectly good, all-powerful, and all-knowing being
The focus is on whether there is good reason to think that God exists and if this belief is rational
3 classical arguments for the existence of God
Cosmological argument
Ontological argument
Teleological argument
Cosmological argument
1. Clarkes argument
2. Kalam argument
Principle of sufficient reason (PSR)
There is an explanation for every state of affair
Necessary being
A being that can explain its own existence
Contingent being
A being that depends on something else for its existence
Clarkes argument is based on the PSR and the need for a necessary being to explain the existence of contingent beings
Kalam argument
1. Everything that begins to exist has a cause
2. The universe began to exist
3. Therefore, the universe has a cause
The Kalam argument is valid and the premises are supported by philosophical and scientific considerations
The Kalam argument does not rely on the PSR or the existence of a necessary being, so it avoids objections to those concepts
To object to the Kalam argument, one must either argue that things can begin to exist without a cause, argue that the universe is eternal, or argue that the argument does not establish the existence of God
Ontological argument
An a priori argument that aims to prove the existence of God without relying on any empirical premises
Ontological argument
God is the greatest conceivable being
2. If God does not exist, then God is not the greatest conceivable being
3. Therefore, God exists
The ontological argument is valid, but the key issue is whether there are good reasons to accept the premises
Gaunilo's objection
A parody of the ontological argument that shows it can be applied to other concepts, suggesting the argument is flawed
Kant's objection
Existence is not a predicate that can be part of a concept
The teleological argument argues from the appearance of order or design in nature to the existence of God
Paley's analogical argument
Biological systems exhibit the same functional organization as designed artifacts, so they must also be designed by a designer (God)
Darwin's theory of evolution provides an alternative explanation for the functional organization of biological systems that does not appeal to a designer
Argument from order
The universe exhibits a high degree of order and regularity, which is more likely given the existence of God than without it
The fine-tuning argument claims that scientific discoveries indicate the universe is 'fine-tuned' for the development of life, which provides evidence for the existence of God
Arguments against the existence of God include the incoherence of the divine attributes (omniscience, omnipotence, omnibenevolence)
Omnipotence paradox
The question of whether God can create a rock so heavy that he cannot lift it, which seems to lead to a contradiction
One response to the omnipotence paradox is to clarify the concept of omnipotence to mean the ability to do anything that is logically possible
Another argument against the existence of God is that the divine attributes (omnipotence, omnibenevolence, omniscience) are inconsistent with each other
G V ¬G
Logical truth
G→ ¬O
Follows from the definition of omnipotence
¬G → ¬O
Follows from the definition of omnipotence
The most radical response is to hold that God can both create the rock and destroy it
Making this move would allow you to reject 2 because God creating the rock does not mean God cannot destroy it but comes at the cost of accepting true contradictions
This move has a significant cost and threatens to undermine our ability to think clearly about God
Omnipotence (clarified)
God is omnipotent in the sense that he can do anything that is logically possible