وَأما الْأَطِبَّاء وَقوم من أَوَائِل الفلاسفة فقد فرقوا هَذِه القوى فِي الْأَعْضَاء وَلم يَقُولُوا بعضو معط غير قَابل لقُوَّة وَقَول الْكثير عِنْد التَّحْقِيق والتدقيق أصح وَقَول الْأَطِبَّاء فِي بادىء النّظر أظهر
whereas physicians (and some of the ancients) considered these faculties to be distributed among several members (the faculty of nutrition in the liver; of vital power in the heart; the mental faculties in the brain); and that hence there can be no such thing as a member giving without receiving. However plausible the physicians are, careful consideration shows that the argument of the Philosopher is much nearer the truth