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From The Road To Serfdom, by F. A. Hayek, 1944, Fiftieth Anniversary Edition, 1994, The University of Chicago Press.

The point which is so important is the basic fact that it is impossible for any man to survey more than a limited field, to be aware of the urgency of more than a limited number of needs. Whether his interests center round his own physical needs, or whether he takes a warm interest in the welfare of every human being he knows, the ends about which he can be concerned will always be only an infinitesimal fraction of the needs of all men. This is the fundamental fact on which the whole philosophy of individualism is based.

Excerpted under Fair Use for purposes of non-commercial education, discussion and comment. Any transcription or typographical errors are mine.