The Fifth Way: Argument from Design
We see that natural bodies work toward some goal, and do not do so by chance.
Most natural things lack knowledge.
But as an arrow reaches its target because it is directed by an archer, what lacks intelligence achieves goals by being directed by...
The Fourth Way: Argument from Gradation of Being
There is a gradation to be found in things: some are better or worse than others.
Predications of degree require reference to the “uttermost” case (e.g., a thing is said to be hotter according as it more nearly resembles that which is...
The First Way: Argument from Motion
Our senses prove that some things are in motion.
Things move when potential motion becomes actual motion.
Only an actual motion can convert a potential motion into an actual motion.
Nothing can be at once in both actuality and potentiality in the same...