Title: The Cosmological Argument for God
 1The Cosmological Argument for Gods Existenceor 
how come we all exist? 
- Is there a rational basis for belief in God? 
2Brief History of the Argument 
- Plato (427-347 BCE) and Aristotle(384-322 BCE) 
 both developed first cause arguments saying the
 universe required some kind of self originated
 motion to set it in motion and to maintain that
 motion. Plato came up with the idea of a
 demiurge  a being of supreme wisdom and
 intelligence but which lacked the ability to
 create something out of nothing. Aristotle
 proposed the idea of a first cause or Prime
 Mover. This follows Parmenidess famous
 statement nothing can come from nothing.
- Make up your own paragraph using the words 
 highlighted.
- What did Parmenides mean by nothing can come 
 from nothing? Do you agree? Give reasons
3St Thomas Aquinas (1225  1274)
Main proponent of the argument in his Five 
Ways. He defined God as the First Cause, or 
Uncaused Causer and then using motion in a 
variant of the argument saw God as the Prime 
Mover. 
 4Summary of the argument 
- Everything that exists must have a cause. 
- The universe exists, therefore it must have a 
 cause.
- 3.Causal chains cannot go back to infinity 
- 4.There must be a first cause. 
- 5. his first cause is God. 
- The argument is motivated by evidence of 
 causation in the world. Therefore it is an
 empirical argument based on observations of the
 world
- Task Write out the argument formally  what do 
 you notice about it?
Be aware of some key terms and their links with 
other aspects of the course Empiricism  
knowledge based on experience or through the 
senses. Think back to the Critical Thinking 
module. What kind of arguments would be 
empirical?  
 5The Cosmological Argument
- (p1) Everything has a cause 
- (p2) Nothing is its own cause 
- (p3) A chain of causes cannot be infinite 
- ______________________________________ 
- (c) There must be first cause to the universe 
- (c) The first cause is God
Go through the argument line by line and try to 
be critical of each step. Provide counter 
arguments if you can.  
 6Causation in the world 
- The Cosmological Argument uses a defining feature 
 of the world- causation to question what was the
 first cause. It then conflates this first cause
 with God.
- Write a causal chain explaining your existence 
7What does the argument imply about God? 
- Note the traditional theistic view of God  
- Omnipotent (all-powerful), omniscient 
 (all-knowing) and all-loving. God is said to be
 eternal  to have always existed necessarily.
- Question To what extent does the Cosmological 
 argument support this view of God? Think
 carefully about the conclusions of the
 Cosmological Argument
8Implications of the argument for Gods nature 
- Argument uses Gods special nature to account for 
 a first cause. A first cause cannot itself be
 caused by anything else. It must be uncaused and
 necessary as opposed to contingent.
- God fits the description of an uncaused necessary 
 being.
9Objections to the argument 
- it is conceivable that the chain of cause  
 effect extends back into infinity (rebuts premise
 4) By way of contrast, consider the future do
 you suppose the future has a specific ending
 point?
- the argument seems inherently self-contradictory. 
 It is based on the assumption that everything
 has a cause. This then begs the question  if
 this first cause is God, what caused God?
 (note this objection misunderstands Gods
 special nature as a necessary being)
10More objections
- if one accepts the idea of a first cause (ie. 
 something that has always existed), it can be
 argued that the universe may always have existed.
 The regress could end with the necessary
 existence of the universe. It need not end with
 the positing of God as a first cause.
- The argument commits the fallacy of composition 
 by assuming that the parts of the universe are
 the same as the whole.
11Objections to the Cosmological Argument 
- Hume claims that that to posit God as a necessary 
 being in the same way as 224 is to make a
 mistake. God is not like mathematics. It is
 possible to conceive of God not as the creator of
 the universe. Therefore, we simply cannot know
 what brought the universe into existence. It is
 mere speculation.
- In the Cosmological Argument God is simply being 
 used to explain a gap in our knowledge. We do not
 know what caused our universe to exist  it is a
 God-shaped hole in our knowledge but it does
 not mean it is God.
12More objections 
- Quantum physics provides a objection to a 
 universe which needs a direct cause.
- Quantum theory is the set of physical laws that 
 apply primarily on a very small scale for
 entities the size of atoms. At the heart of
 quantum theory lie the linked concepts of
 uncertainty and wave-particle duality. In quantum
 every entity has a mixture of properties we are
 used to thinking of as distinctly different
 waves and particles. Heisenburgs uncertainty
 principle demonstrated that the smallest parts
 of matter are subject to unpredictable
 fluctuations. These appear to be spontaneous
 events. Quantum theory raises the following
 question Was the origin of the universe a
 spontaneous quantum event or does it prove that
 there was a divine being responsible for it?
- Quentin Smith argues that quantum physics provide 
 a possibility that the universe may have come
 into existence without a direct cause. The
 universe may have had a beginning but there is no
 reason to think that it is God.
13Summary of objections 
- School boys objection  criticise 
- Fallacy of composition 
- Limitations on conclusion  no traditional 
 theism
- Hume  Gods existence is not necessary 
- Universe could be infinite 
- Universe could be its own cause 
- God shaped hole does not equal God 
- Quantum physics could mean there is uncaused 
 matter in the universe
14Things to think about 
- Brian Davies takes the position that the 
 Cosmological Argument cannot stand alone as a
 proof for the existence of God and it would have
 to be supported by other evidence.
- As an argument for a first cause of all existing 
 things the Cosmological Argument seems a
 reasonable one. But it does not by itself
 establish the existence of God with all the
 properties sometimes ascribed to him.
- Brian Davies The Introduction to the Philosophy 
 of Religion (OUP 1990)