"Budget: A mathematical confirmation of your…

“Budget: A mathematical confirmation of your suspicions” is a jocular quotation that was credited to A. A. Lattimer (or “Latimer”) in 1949. Nothing else is known about this author besides this quotation, which has appeared in many books.

Google Books
The Reader’s Digest
Volume 54
1949
Pg. 38:
Budget — a mathematical confirmation of your suspicions (A. A. Lattimer).

14 March 1949, Orrville (OH) Courier-Crescent, pg. 6, col. 3:
“A budget is a mathematical confirmation oí your suspicions,”
A. A. Latimer

27 January 1957, Sunday World-Herald (Omaha, NE), “The Cheering Section” conducted by Bruce Paterson, Magazine sec., pg. 23G, col. 3:
Budget: A mathematical confirmation of our suspicions.—Quaker Campus.

Google Books
The New Speaker’s Treasury of Wit and Wisdom
By Herbert Victor Prochnow
New York, NY: Harper
1958
Pg. 49:
Budget: A mathematical confirmation of your suspicions. A. A. Latimer

Google Books
Complete Speaker’s and Toastmaster’s Library
By Jacob Morton Braude
Englewood Cliffs, NJ: Prentice-Hall
1965
Pg. 10:
Budget:
1. a method of worrying before you spend instead of afterward.
2. a mathematical confirmation of our suspicions.

Google Books
Book of Business Quotations
Edited by Bill Ridgers
Hoboken, NJ: John Wiley and Sons
2012
Pg. 2:
Budget: a mathematical confirmation of your suspicions.
A.A. Latimer, author