The Greek Anthology 10.125

πάντα γέλως, καὶ πάντα κόνις, καὶ πάντα τὸ μηδέν·
πάντα γὰρ ἐξ ἀλόγων ἐστὶ τὰ γινόμενα.

Everything laughter, and everything dust,
and everything nothing:
for everything that happens
is from the irrational.

See also: verses