Letters 58.17

The second class of “things which exist,” according to Plato, is that which is prominent and stands out above everything else; this, he says, exists in a pre-eminent degree. The word “poet” is used indiscriminately, for this term is applied to all writers of verse; but among the Greeks it has come to be the distinguishing mark of a single individual. You know that Homer is meant when you hear men say “the poet.” What, then, is this pre-eminent Being? God, surely, one who is greater and more powerful than anyone else.

Seneca, Letters to Lucilius 58.17, translated by Richard Mott Gummere