Aristotle's definition of poetry

It also follows from what has been said that it is not thc poct’s business to relate actual cvcms, but such things as might or could happen in accordance with probability or necessity. A poet differs from a historian, not bccausc 0nc writes vcrsc and thc othcr prose (thc work of Hcrodotus could bc put imo vcrsc, but it would still remain a history, whcthcr in vcrsc 0r prose), but because thc historian relates what happcncd, thc poet what might happen. That is why poetry is more akin to philosophy and is 21 bcttcr thing than history; poetry deals with general truths, history with specific cvcnts. The latter arc, for example, what Alcibiadcs did or suffered, whilc general truths arc thc kind of thing..