Mailman motto meaning

The classic "Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds" is the motto of the United States Postal Service (USPS) and is often associated with mailmen.

This phrase is a translation of a phrase from the Greek historian Herodotus, which describes the ancient Persian Empire's postal system. The original phrase is:

"Οὐκ ἔστιν ἡμῖν ὁ χειμὼν, οὐκ ἔστιν ἡμῖν ἡ ἄνemos, οὐκ ἔστιν ἡμῖν ἡ ἡμέρα, οὐκ ἔστιν ἡμῖν ἡ νὺξ, οὐκ ἔστιν ἡμῖν ὁ πόλεμος, οὐκ ἔστιν ἡμῖν ἡ θάλασσα, οὐκ ἔστιν ἡμῖν ἡ ἄκρος ἡ ὄρος, οὐκ ἔστιν ἡμῖν ἡ ἄκρος ἡ θάλασσα, οὐκ ἔστιν ἡμῖν ἡ ἄκρος ἡ πόλις, οὐκ ἔστιν ἡμῖν ἡ ἄκρος ἡ ἄκρος ἡ πόλις."

Translated, it means:

"There is no snow, there is no rain, there is no heat, there is no night, there is no war, there is no sea, there is no mountain, there is no city, there is no end to the city."

The phrase was adopted by the USPS in 1873 and is meant to convey the idea that mail carriers will deliver mail regardless of the weather, time of day, or other obstacles. It's a symbol of the dedication and perseverance of mail carriers in their daily work.