The United States Postal Service has no official creed or motto. Often falsely cited as such, "Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds" is merely an inscription on the James Farley Post Office derived from a comment by Herodotus, who was actually referring to the ancient courier service of the Persian Empire. A previous USPS logo A USPS truck in San Francisco A smaller truck (a Long Life Vehicle or LLV) used in suburban areas The United States Postal Service (USPS) is an independent establishment of the executive branch of the United States government (see ) responsible for providing postal service in the... The James A. Farley Post Office is located located at 421 Eighth Avenue, between 31st and 33rd Streets in Manhattan, across the street from Pennsylvania Station and Madison Square Garden. ... Bust of Herodotus at Naples Herodotus of Halicarnassus (Greek: , Herodotos) was a historian who lived in the 5th century BC (484 BC-ca. ... The Persian Empire was a series of historical empires that ruled over the Iranian plateau. ...