Cosmological argument
An argument for God as the one unique explanation of some alleged general fact about reality
The Kalām argument
P1: Whatever begins to exist has a cause of its beginning
P2: The universe began to exist
C1: Therefore, the universe has a cause of its beginning
P3: The cause must have the following attributes that God is thought to have:
1) uncaused because an infinite series of causes is impossible
2) outside of time and space because it caused all time and space
3) hugely powerful because it created all matter and energy
4) personal because it’s the only way to explain how an eternal cause can produce an effect with a beginning
C2: Therefore: God exists.
Kalām cosmological argument terminology
A version of the cosmological argument from the Kalām school of theology
Principle of causality
The principle that everything has a cause and/or a sufficient reason which explains why it happened or exists.
Aquinas’ first way from motion
P1) The world contains motion
P2) Nothing can change itself it must be changed by something distinct from it.
P3) If there were an infinite series of changes caused by changes, there would be no first changer
P4) If there were no first changer there could not be any change.
C1) Therefore, given P1 there must be a first changer
P5) God is this first changer.
C2) Therefore God exists
An issue that attacks premise two of the Kalām argument
The possibility of an infinite series. It may be argued that while different components of the universe may have begun to exist and were hence caused by something, the universe as a whole has always existed so there never was a first event in the universe
Aquinas second way from causation
P1) The world contains efficient sustaining causation
P2) Nothing can be the efficient sustaining cause of itself since its existence cannot depend on itself
P3) If the series of efficient sustaining causes were infinite with no first cause then there would be no first cause.
P4) If there were no first efficient sustaining cause there could not be any other causation
C1) Therefore, given P1 there must be a first efficient sustaining cause
P5) God is this first efficient sustaining cause.
C2) Therefore God exists
Aquinas third way from contingency
P1: If everything were contingent then there would be a time when nothing existed.
P2: If this were so, then nothing would exist now as nothing can come from nothing.
P3: But things do exist now.
C1: Therefore not everything is contingent
P4: An infinite regression of necessary beings caused by other necessary beings is impossible.
C2: Therefore, there must be one first necessary being whose necessity was not caused by another, and this all people call God.
contingent being
A being which exists but could possibly have not existed
necessary being
A being which exists and must have always existed
Leibniz’s argument from the principle of sufficient reason
P1: All contingent things need a sufficient reason for why they exist, given that they might not have existed.
P2: If they exist as they do because of other contingent things (in an infinite series in the present/past), then this would not be a sufficient explanation because the infinite series is still itself contingent.
C1: Therefore, there must, ultimately, be a sufficient reason for the contingent series.
C2: Therefore a necessary being exists - this is God
Descartes cosmological argument for the existence of God
P1) I exist as a being from one moment to the next and this requires a cause.
P2) There are 3 options for this cause:
(1) me,
(2) some other finite being (e.g. my parents), (3) God.
P3) I cannot be the cause of my continued existence because I don’t have this power
P4) No other finite being could be the ultimate cause of my continued existence as:
they do not keep me in existence from moment to moment;
they only brought my physical body into existence, not me as a thinking thing.
P5) My continued existence cannot be the result of various separate non-divine causes and must be, rather, one being.
C1) Therefore, the only possible cause of my continued existence is one supremely perfect being
C2) Therefore, God must exist.