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Slide 1

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Arguments for the
existence of God
The Cosmological Argument…read more

Slide 2

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St. Thomas Aquinas
The classical argument
Presented in the first three of his
"Five Ways".
Aquinas was influenced by
Aristotlian thinking.
Rejected the idea
of infinite regress.
Look back at Aristotle's
four causes, particularly
At the `final cause'. This will
Be vital to writing essays.…read more

Slide 3

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Proof for the existence of God
Thomas Aquinas (1225-1274) writes his Five Ways in Summa Theologica
1.The First Way
·From Motion
2.The Second Way The Cosmological Argument
·From Cause
3.The Third Way
·From Necessity and Contingency
4.The Fourth Way An Ontological Argument
5.The Fifth Way A Teleological Argument…read more

Slide 4

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The First Way
"It is certain, and evident to our senses, that in the
world some things are in motion. Now whatever is
moved is moved by another... It is therefore
impossible that in the same respect and in the same
way a thing should be both mover and moved... If
that by which it is moved be itself moved, then this
also must needs be moved by another... But this
cannot go on to infinity, because then there would be
no first mover. and, subsequently, no other mover...
Therefore it is necessary to arrive at a first mover,
moved by no other; and this everyone understands to
be God."…read more

Slide 5

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P1: Nothing can move itself, since nothing
can be both mover and moved, yet
things are evidently in motion
P2: An infinite chain of movers that has
no beginning can have no successive or
ultimate movers.
C: There must therefore be a first mover
that causes motion in all things, and this
we call God.…read more

Slide 6

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Motion is a state as well as something which moves in
times and space from one place to another.
· Aquinas called motion,
`the reduction of potentiality to actuality'
· E.g. fire is actually hot, it changes wood (which is
potentially hot) to a state of actually being hot.
· Something can not be hot and cold at the same time,
so what causes that change from one state to
another?…read more

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