“With Latin, a horse, and money, thou wilt pass through the world. Span.” was cited in John Ray’s Collection of English Proverbs (1670). “PROV. ‘Con Latin, rocin y fiorin andaras el mundo.’ Latin, a Horse, and Money will carry you through the World” was cited in a Spanish-English dictionary in 1740.
 
Yves Mersch, a member of the Executive Board of the European Central Bank, said on May 18, 2015:
 
“There is an old saying that ‘with money, Latin and a good horse, you can get through all Europe’. These days a good command of Latin does not help you much outside of the Vatican City. Most of us prefer to travel by plane or train. But at least in the 19 countries of the euro area, the money a citizen holds in his or her pocket crosses all national borders.”
 
     
Google Books
A New Dictionary,
Spanish and English and English and Spanish
By Pedro Pineda
London: Printed for F. Gules
1740
Pg. ?:
PROV. “Con Latin, rocin y fiorin andaras el mundo.” Latin, a Horse, and Money will carry you through the World.
 
Google Books
Select Proverbs of All Nations:
Illustrated with Notes and Comments
By Thomas Fielding (John Wade—ed.)
New-York, NY: Published by P. Covert
1825
Pg. 63:
With Latin, a horse, and money, thou wilt past through the world. — Spanish.
   
Google Books
A Hand-book of Proverbs. Comprising an Entire Re-publication of Ray’s Collection of English Proverbs, With His Additions from Foreign Languages
Collected by Henry George Bohn
London: George Bell and Sons
1875
Pg. 570:
With Latin, a horse, and money, thou wilt pass through the world. Span.
 
IMDb (The Internet Movie Database)
Ben Casey: Season 4, Episode 9
Money, a Horse and a Knowledge of Latin (16 Nov. 1964)
TV Episode |  60 min |  Drama
 
Twitter
Lindsey Rue
‏@GypsyTraveller3
With Latin, a horse, and money, you may travel the world (proverb)
12:34 PM - 18 Jan 2010
 
Twitter
Money Proverbs
‏@MoneyProverbs
With Latin, a horse, and money, you may travel the world. ~British Proverb
9:53 AM - 31 Mar 2015
 
European Central Bank
Swedbank Economic Outlook Seminar
Speech by Yves Mersch, Member of the Executive Board of the ECB,
Stockholm, 18 May 2015
Ladies and gentlemen,
 
There is an old saying that “with money, Latin and a good horse, you can get through all Europe”. These days a good command of Latin does not help you much outside of the Vatican City. Most of us prefer to travel by plane or train. But at least in the 19 countries of the euro area, the money a citizen holds in his or her pocket crosses all national borders.
 
This only remains the case, however, if that money keeps its value – which is our responsibility at the ECB.