I had also been trained in Logic by two Jesuits (Edward Sparrow, and his teacher Henry Veatch).

I later wrote a book on Logic, looking at the underlying Euler Diagrams of the 19 valid syllogisms.

Yes, several of the valid syllogisms can be represented by Euler Diagrams of the same topology.

Being logical is necessary by not sufficient for a life of reason.

I turned out to be one of the three hundred persons in USA who are able to think.

It’s gotten me a patent (US 10176661 B2) and brought me income of zero.

Zero is a pretty low number. So I don’t need a big wallet.