Species of quality

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Often appears with: temperance and self-mastery · justice as a virtue · habit as first species · good and evil · end of nature

Usually: argument (1) · detachment (1)

Summa Theologica, Part I-II (Pars Prima Secundae) primary

Thomas, Aquinas, Saint · c. 1265–1273
PART I-II ("Prima Secundae") > i.e. from pleasures. But pain and sorrow are most destructive of pleasure; since sorrow hinders all pleasure, as stated in *Ethic.* (61/79)

Thomas distinguishes four species of quality, arguing that only the first species (habit and disposition) bears notions of good and evil, since it concerns a thing’s nature and end.

the subject is determined to its accidental being, is called an accidental quality, which is also a kind of difference, as is clear from the Philosopher (Metaph. v, text. 19). Now the mode o[r] determination of the subject to accidental being may be taken in regard to the very nature of the subject, or in regard to action, and passion resulting from its natural principles, which are matter and form; or again in rega…