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Ladies & Gentlemen:

I continue the subject of my last lecture. From what I was saying it evidently amounts to the same thing to say that an object possesses the quality of humanity and to say that it belongs to the collection of men. Nevertheless, there is a considerable difference between a quality and a collection; for though the essence of the collection is the essence of the quality, yet its existence is the existence of all its members. A quality has no individual identity; it has no existence. But a collection is a single individual object; it exists. Not only is a heap of sand a single individual object; but