PPT Slide
Ancient & Medieval Philosophy -- David L. Rouse
- Aristotle identified four forms as “perfect syllogisms.”
All M are P. No M are P.
All S are M. All S are M.
\All S are P. \No S are P.
All M are P. No M are P.
Some S are M. Some S are M.
\Some S are P. \Some S are not P.