Page:Ferrier's Works Volume 1 - Institutes of Metaphysic (1875 ed.).djvu/318

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is the iteration in thought of what was formerly presented in knowledge. It is therefore a contradiction to suppose that what never was, and never can be, known, can be iterated or represented in thought. Repetition necessarily implies a foregone lesson. Therefore that alone can be represented in thought which can be presented in knowledge; in other words, it is impossible to think what it is impossible to know;—it is impossible to think that of which knowledge has supplied, and can supply, no sort of type.