The Clouds (Nephelai) is a comedy written by the celebrated playwright Aristophanes lampooning intellectual fashions in classical Athens. It was originally produced at the City Dionysia in 423 BC and it was not well received, coming last of the three plays competing at the festival that year. It was revised between 420-417 BC and thereafter it was circulated in manuscript form.
"the moon deserted her course and the sun at once veiled his beam threatening, no longer to give you light, if Cleon became general."