“Should not the Society of Indexers be known as Indexers, Society of, The?”

Statements such as these are made with alarming frequency by investment professionals. In some cases, subtle and sophisticated reasoning may be involved. More often (alas), the conclusions can only be justified by assuming that the laws of arithmetic have been suspended for the convenience of those who choose to pursue careers as active managers.
William F Sharpe, "The arithmetic of active management." Financial Analysts Journal 47.1 (1991): 7-9.

Part II: Te Palinure Petens (p. 64)
The Unquiet Grave (1944)

Source: The Four Pillars of Investing (2002), Chapter 13, Defining Your Mix, p. 246.

Source: Shaping the world economy, 1962, p. 263

Vol. III, Sorting and Searching, End of index (1973)
The Art of Computer Programming (1968–2011)

The Prescriptions Against the Heretics as translated by Stanley Lawrence Greenslade, in Early Latin Theology: Selections from Tertullian, Cyprian, Ambrose, and Jerome (1956), p. 63
Context: Notorious, too, are the dealings of heretics with swarms of magicians and charlatans and astrologers and philosophers — all, of course, devotees of speculation. You can judge the quality of their faith from the way they behave. Discipline is an index to doctrine.

On The Algebra of Logic (1885)
Context: If the sign were not related to its object except by the mind thinking of them separately, it would not fulfil the function of a sign at all. Supposing, then, the relation of the sign to its object does not lie in a mental association, there must be a direct dual relation of the sign to its object independent of the mind using the sign. In the second of the three cases just spoken of, this dual relation is not degenerate, and the sign signifies its object solely by virtue of being really connected with it. Of this nature are all natural signs and physical symptoms. I call such a sign an index, a pointing finger being the type of the class.
The index asserts nothing; it only says "There!" It takes hold of our eyes, as it were, and forcibly directs them to a particular object, and there it stops. Demonstrative and relative pronouns are nearly pure indices, because they denote things without describing them; so are the letters on a geometrical diagram, and the subscript numbers which in algebra distinguish one value from another without saying what those values are.

Source: Classification and indexing in the social sciences (1963), p. 93; As cited in: Mei Hong (2006, p. 44)

Source: Jargon der Eigentlichkeit [Jargon of Authenticity] (1964), p. 6