Kitap 4
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THE Stoics give this definition of sense: Sense is the apprehension or comprehension of an object by means of an organ. There are several ways of expressing what sense is; it is either a habit, a faculty, an operation, or an imagination which apprehends by means of an organ of sense,—and also the eighth principal thing, from whence the senses are derived. The instruments of sense are intelligent spirits, which from the said commanding part reach unto all the organs of the body. Epicurus, that sense is a faculty, and that which is perceived by the sense is the product of it; so that sense hath a double acceptation,—sense which is the faculty, and the thing received by the sense, which is the effect. Plato, that sense is that commerce which the soul and body have with those things that are exterior to them; the power of which is from the soul, the organ by which is from the body; but both of them apprehend exterior objects by means of the imagination. Leucippus and Democritus, that sense and intelligence arise from external images; so neither of them can operate without the assistance of an image falling upon us.
Chapter IX. WHETHER WHAT APPEARS TO OUR SENSES AND IMAGINATIONS BE TRUE OR NOT.
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THE Stoics say that what the senses represent is true; what the imagination, is partly false, partly true. Epicurus, that every impression which either the sense or fancy gives us is true, but of those things that fall under the account of opinion, some are true, some false: sense gives us a false representation of those things only which are the objects of our understanding; but the fancy gives us a double error, both of things sensible and things intellectual. Empedocles and Heraclides, that the senses perceive by a just accommodation of the pores in every case; every thing that is perceived by the sense being congruously adapted to its proper organ.
Chapter X. HOW MANY SENSES ARE THERE?