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I.
The two most common accidents of human life are Pleasure and Pain.
II.
Since it was not permitted for the great Architect to compose the whole with the whole, he joined the extremes with the extremes, according to the opinion of Plato original: "ex Platonis sententia"; thus, as the poet likely referring to Horace, Epistulae 1.2.55: "dolore ematur voluptas" says, pleasure is bought with pain, and in turn, pain is reconciled by pleasure.
III.
Consequently, the Romans had so joined the sacred rites of the goddesses Volupia Goddess of Pleasure and Angerona Goddess of Silence and Pain/Anguish that those approaching the altar of Volupia were compelled to enter and depart through the shrine of Angerona.
IV.
Since the consideration of these accidents belongs to the Physicist, the Theologian, and the Ethicist, we, however, speak of it as Physicians, insofar as it pertains to the goal of the art, which is established in the preservation of health and the rooting out of diseases.
V.
Therefore, passing over the pains of the soul, which are called perturbations, let us speak only of the pains of the body, as they are among all bodily symptoms the ones that cause the most trouble for both the sick and the physicians due to their distress.
VI.
This symptom is marked by various names among Galen and Hippocrates, since it is called algos pain, algesis a sense of pain, algema a painful thing, ponos labor/pain, odyne pain, and odin travail/pain, and by other denominations among other authors.
VII.
These words, as well as the Latin Dolor, are taken by authors in two ways: sometimes for the disposition preceding the pain, as in 2 Aphorisms 6 and 6 Epidemics comment 1; other times for the effect following that disposition, which is commonly called Pain by everyone.
VIII.
We say the word taken in the latter meaning is a symptom of the sense of touch being insolently affected by its object.