If any thing be a man, the same is also a living creature,
If any thing be a living creature, the same is a body,
Therefore, If any thing be a man, the same is a body.
In like manner, this categorical syllogism in an indirect figure,
No stone is a living creature,
Every man is a living creature,
Therefore, No man is a stone,
Or, No stone is a man,
is equivalent to this hypothetical syllogism:
If any thing be a man, the same is a living creature,