FIG. 12.
The diagram correctly represents the two premises since all of the “true teacher” circle belongs to both the “just” and “sympathetic” circles. But all of the “sympathetic” circle does not belong to the “just” circle. Hence the fallacy.
(5) No conclusion can be drawn from two negative premises.
When two terms are both denied of a third term, it is quite impossible to draw any conclusion relative tothe two terms, as the absolute exclusion of the third term eliminates any possibility of a common link or standard.
The circles will make this apparent:
No men are immortal,
No trees are immortal,
FIG. 13.
“No trees are men” is the conclusion represented by [Fig. 13].