Sometimes referred to as ‘informal logic’, the content of terms and propositions.

According to the three activities of reason, the process of apprehension especially produces concerns of material logic.

The Ten Categories

  1. Substance
  2. Quantity
  3. Quality
  4. Relation
  5. Place
  6. Time
  7. Posture
  8. Possession
  9. Action
  10. Passion

The Five Predicables

  1. Essence
  2. Accident
  3. Genus
  4. Species
  5. Difference

The Four Causes

  • Efficient
  • Formal
  • Material
  • Final

Material Fallacies may arise by the mis-application of this art.