[mrblonde77]

I read this somewhere and have been waiting to make a thread on it. I guess I'll just post it now.

If there’s knowledge, then either some things are known without proof or we can prove every premise by previous arguments infinitely.
We can't prove every premise by previous arguments infinitely.
There's knowledge.
So ???

{ 1 } - Some things are known without proof.
{ 2 } - Everything that's known is provable.
{ 3 } - There's no knowledge.
{ 4 } - None of these validly follows.

Aristotle (the first logician) used this to argue that every argument ultimately rests on unproven premises.