Royal Road

The Royal Road was an ancient highway reorganized and rebuilt for trade by Darius the Great, the Achaemenid emperor, in the 5th century BC.

A later improvement by the Romans of a road bed with a hard-packed gravelled surface of 6.25 m width held within a stone curbing was found in a stretch near Gordium[6] and connecting the parts together in a unified whole stretching some 1677 miles, primarily as a post road, with a hundred and eleven posting stations maintained with a supply of fresh horses, a quick mode of communication using relays of swift mounted messengers, the kingdom's pirradazis.

In 1961, under a grant from the American Philosophical Society, S. F. Starr traced the stretch of road from Gordium to Sardis, identifying river crossings by ancient bridge abutments.

Herodotus's praise for these messengers— "Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds"— was inscribed on the James Farley Post Office in New York and is sometimes thought of as the United States Postal Service creed.

Karl Marx wrote in the 1872 Preface to the French Edition of Das Kapital (Volume 1), "There is no royal road to science, and only those who do not dread the fatiguing climb of its steep paths have a chance of gaining its luminous summits."