Man sees, hears, touches, tastes, and smells that which it is necessary for him to see, hear, touch, taste, and smell in order to preserve his life.[El hombre, pues, en su estado de individuo aislado, no ve, ni oye, ni toca, ni gusta, ni huele más que lo que necesita para vivir y conservarse.]

Source:(ed. 1921), Chapter II. The Starting-Point, page 23
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