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Again, in matter of practice, error attaches either to the

general rule, in the process of deliberation, or to the

particular fact: for instance, this would be a general rule, "All

water of a certain gravity is bad;" the particular fact, "this

water is of that gravity."

And that Practical Wisdom is not Knowledge is plain, for it has

to do with the ultimate issue,[33] as has been said, because

every object of action is of this nature.

To Intuition it is opposed, for this takes in those principles

which cannot be proved by reasoning, while Practical Wisdom is

concerned with the ultimate particular fact which cannot be

realised by Knowledge but by Sense; I do not mean one of the five

senses, but the same by which we take in the mathematical fact,

that no rectilineal figure can be contained by less than three

lines, i.e. that a triangle is the ultimate figure, because here

also is a stopping point.

This however is Sense rather than Practical Wisdom, which is of

another kind.[34]

Chapter IX.