Serious things cannot be understood without laughable things, nor opposites at all without opposites.
PlatoLet us affirm what seems to be the truth, that, whether one is or is not, one and the others in relation to themselves and one another, all of them, in every way, are and are not, and appear to be and appear not to be.
PlatoThe gods created certain kinds of beings to replenish our bodies... they are the trees and the plants and the seeds.
PlatoLessons, however, that enter the soul against its will never grow roots and will never be preserved inside it.
Plato