Invaluable, authoritative, probably the "best"
Comparing this, the 17th edition of the best known and arguably the most authoritative collection of quotations ("familiar," memorable, or just plain quotable--you choose the terminology), to its predecessor the 16th edition, the question arises, should you upgrade? I own both books and have examined them in some detail. I have used the 16th for many years.
The 17th is set in a new typeface which is both slightly narrower and less bold than that of the 16th. The result is a cleaner look to the pages and more white space. The difference in the number of pages--1431 for the new, 1405 for the old--is slight, and a little misleading. In fact the new addition has more entries--"around one hundred" authors are quoted for the first time, and some authors have additional entries. But the text in the 17th actually takes up less room. Its Index, for example, although it has more entries, has only 564 pages to 608 for the 16th. This is accomplished mainly because the narrower type is also shorter, allowing more entries per column.