Can anyone explain Aquinas’ fifth wayWatch
Aquinas' own example was that of the arrow and the archer, which would have been easily understood in his time. Aquinas stated that the arrow, by itself, cannot reach the target - it needs to be fired by the archer in order for this to happen. He relates this to the workings of the universe, stating that everything in the universe follows natural laws, even if they possess no intelligence.
The fact that these things tend to follow these laws, and fulfil some purpose or end goal (their telos), yet do not have the ability to think for themselves, suggests that they have been 'directed' by something else. For Aquinas, the only possible explanation was that this guiding intelligence was God.
I hope this helps!