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90 of stereotypes. We are told about the world before we see it. We imagine most things before we experience them. And those preconceptions, unless education has made us acutely aware, govern deeply the whole process of perception. They mark out certain objects as familiar or strange, emphasizing the difference, so that the slightly familiar is seen as very familiar, and the somewhat strange as sharply alien. They are aroused by small signs, which may vary from a true index to a vague analogy. Aroused, they flood fresh vision with older images, and project into the world what has been resurrected in memory. Were there no practical uniformities in the environment, there would be no economy and only error in the human habit of accepting foresight for sight. But there are uniformities sufficiently accurate, and the need of economizing attention is so inevitable, that the abandonment of all stereotypes for a wholly innocent approach to experience would impoverish human life.

What matters is the character of the stereotypes, and the gullibility with which we employ them. And these in the end depend upon those inclusive patterns which constitute our philosophy of life. If in that philosophy we assume that the world is codified according to a code which we possess, we are likely to make our reports of what is going on describe a world run by our code. But if our philosophy tells us that each man is only a small part of the world, that his intelligence catches at best only phases and aspects in a coarse net of ideas, then, when we use our stereotypes, we tend to know that they are only stereo-