The mechanical part of the intellectual centre has a special name. Sometimes it is spoken of as a separate centre, and in that case it is called the formatory centre or formatory apparatus. Most people use only this part; they never use the better parts of the intellectual centre. But ideas of this system or similar ideas cannot be understood by formatory apparatus at all. Formatory apparatus has very definite limitations. One of its peculiarities is that it compares only two things, as though in any particular line only two things existed. Then formatory centre likes thinking in extremes; for instance it either knows everything or it knows nothing. Another of its peculiarities is immediately to look for the opposite

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