If the Medes darken the sun, we shall have our fight in the shade.

From Herodutus' The History.

Thus nobly did the whole body of Lacedaemonians and Thespians behave; but nevertheless one man is said to have distinguished himself above all the rest, to wit, Dieneces the Spartan. A speech which he made before the Greeks engaged the Medes, remains on record. One of the Trachinians told him, "Such was the number of the barbarians, that when they shot forth their arrows the sun would be darkened by their multitude." Dieneces, not at all frightened at these words, but making light of the Median numbers, answered "Our Trachinian friend brings us excellent tidings. If the Medes darken the sun, we shall have our fight in the shade." Other sayings too of a like nature are reported to have been left on record by this same person.