Histories
Herodotus
Herodotus. Godley, Alfred Denis, translator. Cambridge, MA; London: Harvard University Press; William Heinemann, Ltd., 1920-1925 (printing).
The Persians saw them running to attack and prepared to receive them, thinking the Athenians absolutely crazy, since they saw how few of them there were and that they ran up so fast without either cavalry or archers.