Perhaps this book will be understood only by someone who has himself already had the thoughts that are expressed in it–or at least similar thoughts.–So it is not a textbook.–Its purpose would be achieved if it gave pleasure to one person who read and understood it.
The book deals with the problems of philosophy, and shows, I believe, that the reason why these problems are posed is that the logic of our language is misunderstood. The whole sense of the book might be summed up the following words: what can be said at all can be said clearly, and what we cannot talk about we must pass over in silence…

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