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The Problems of Philosophy - Russell, Bertrand ยท 48 words

The Problems of Philosophy - Russell, Bertrand

If I am acquainted with a thing which exists, my acquaintance gives me the knowledge that it exists. But it is not true that, conversely, whenever I can know that a thing of a certain sort exists, I or some one else must be acquainted with the thing.

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The Problems of Philosophy - Russell, Bertrand | Practice