These Peripatetics accordingly made careful investigations into the nature of all things, so as to determine which I should be avoided as evil, disco… - John of Salisbury

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These Peripatetics accordingly made careful investigations into the nature of all things, so as to determine which I should be avoided as evil, discounted as useless, sought after as good,or preferred as better, and finally which are called "good" or "bad" according to circumstances. There thus developed two branches of philosophy, natural and moral, which are also called ethics and physics. But, through lack of scientific skill in argumentative reasoning, many absurdities were concluded. Thus Epicurus would have the world originate from atoms and a void, and would dispense with God as its author; whereas the Stoics asserted that matter is coeternal with God, and held that all sins are equally grave. p. 76