|C.N. Douglas, comp. Forty Thousand Quotations: Prose and Poetical. 1917.|
| Time is of more value than type, and the wear and tear of the temper than an extra page of index.|
R. H. Busk.
| If a book has no index or good table of contents, it is very useful to make one as you are reading it.|
| I wish you would add an index rerum, that when the reader recollects any incident he may easily find it.|
| I certainly think that the best book in the world would owe the most to good index, and the worst book, if it had but a single good thought in it, might be kept alive by it.|
| So essential did I consider an index to be to every book, that I proposed to bring a bill into Parliament to deprive an author who publishes a book without an index of the privilege of copyright, and, moreover, to subject him for his offence to a pecuniary penalty.|