eustochia

Now just as docility consists in a man being well disposed to acquire a right opinion from another man, so shrewdness is an apt disposition to acquire a right estimate by oneself, yet so that shrewdness be taken for _eustochia_, of which it is a part.

Summa Theologica, Part II-II (Secunda Secundae) Translated by Fathers of the English Dominican Province Aquinas Thomas

Nevertheless the philosopher [* Andronicus; Cf.Q. 48, Obj. 1] who calls shrewdness a part of prudence, takes it for _eustochia_, in general, hence he says: "Shrewdness is a habit whereby congruities are discovered rapidly."

Summa Theologica, Part II-II (Secunda Secundae) Translated by Fathers of the English Dominican Province Aquinas Thomas

For _eustochia_ is a happy conjecture about any matter, while shrewdness is "an easy and rapid conjecture in finding the middle term" (Poster. i, 34).

Summa Theologica, Part II-II (Secunda Secundae) Translated by Fathers of the English Dominican Province Aquinas Thomas

_eustochia_, i.e. "a happy conjecture," of which _shrewdness_ is a part, which is a "quick conjecture of the middle term," as stated in

Summa Theologica, Part II-II (Secunda Secundae) Translated by Fathers of the English Dominican Province Aquinas Thomas

_eustochia_, i.e. "a happy conjecture": for the latter is

Summa Theologica, Part II-II (Secunda Secundae) Translated by Fathers of the English Dominican Province Aquinas Thomas

a seventh, viz. _memory_ mentioned by Tully; and _eustochia_ or

Summa Theologica, Part II-II (Secunda Secundae) Translated by Fathers of the English Dominican Province Aquinas Thomas