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Jack of Spades
the cosmological family

The Second Way (Efficient Causation)

St Thomas Aquinas — The Angelic Doctor
Summa Theologiae (Summa Theologica)

The Second Way (Efficient Causation), card face
DemonstrativeConcludes that something exists.
Argument form
Regress argument (essentially ordered series of efficient causes cannot be infinite)
Concludes to
First cause (a first efficient cause, itself uncaused)
Premise ground
Metaphysical (an essentially ordered series of efficient causes cannot be infinite)
Modal strength
Actual
What it licenses
  • first
  • aseity (uncaused)
Period
Medieval (1265–74)
Tradition
Thomist (Aristotelian)

Further reading

This formulation is ours, composed from the primary source and compressed to fit the card; the argument admits of other statements. Objections have been made to every argument in the deck; where one is linked above, it is chosen by us, not written by us.

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