Selections from Berkeley; with an introduction and notes, for the use of students in the universities - Brossura
Sinossi
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 Excerpt: ...these following reasons:--9. First, It is evident that, when the mind perceives any idea, not immediately and of itself, it must be by the means of some other idea. Thus, for instance, the passions which are in the mind of another are of themselves to me invisible. I may nevertheless perceive them by sight, though not immediately, yet by means of the colours they produce in the meaning of the ambiguous term 'necessity' (which may be either a logical, mathematical, metaphysical, physical, or moral necessity) should be here distinguished by the student. Is there ground for ultimately distinguishing the necessity in virtue of which this is the cause of that from the necessity for a cause of every change; also for distinguishing mathematical from metaphysical necessity; and both from the intellectual obligation to avoid a contradiction in terms. ACQUIRED PERCEPTIONS OF SIGHT. 171 countenance. We often see shame or fear in the looks of a man, by perceiving the changes of his countenance to red or pale. 10. Moreover, it is evident that no idea which is not itself perceived can be to me the means of perceiving any other idea1. If I do not perceive the redness or paleness of a man's face themselves, it is impossible I should perceive by them the passions which are in his mind. 11. Now, from sect. 2, it is plain that distance is in its own nature imperceptible; and yet it is perceived by sight. It remains, therefore, that it be brought into view by means of some other idea, that is itself immediately perceived in the act of vision. 12. But those lines and angles by means whereof some men pretend to explain the perception of distance, are themselves not at all perceived, nor are they in truth ever thought of by those unskilful in optics. I appeal to any one's experie...
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