What you may think of as the motto of the US Postal Service — "Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds" — actually has no official role in the organization; it's just a famous inscription on the frieze of the James A. Farley Post Office.
After more than a decade of talk, work is finally underway on the expansion of neighboring Penn Station into the Farley Post Office, an effort to relieve overcrowding and restore a little dignity to the once-grand transit hub.