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Nor again does Practical Wisdom consist in a knowledge of general

principles only, but it is necessary that one should know also

the particular details, because it is apt to act, and action is

concerned with details: for which reason sometimes men who have

not much knowledge are more practical than others who have; among

others, they who derive all they know from actual experience:

suppose a man to know, for instance, that light meats are easy of

digestion and wholesome, but not what kinds of meat are light, he

will not produce a healthy state; that man will have a much

better chance of doing so, who knows that the flesh of birds is

light and wholesome. Since then Practical Wisdom is apt to act,

one ought to have both kinds of knowledge, or, if only one, the

knowledge of details rather than of Principles. So there will be

in respect of Practical Wisdom the distinction of supreme and

subordinate.[26]