Brunetto Latini
Mark what a significant truth lies behind these things! A man of today will be quick enough with his reply: Philosophy—with that I am familiar! I have studied the whole history of philosophy. I know what philosophy is, and what it teaches. As to the four Virtues—Plato already named them: Wisdom, Courage, Balance or Moderation, and Justice. And the God of Love, who does not know of Him! You need only read the four Gospels. The man of today is familiar with all these things. But it is precisely the characteristic of spiritual knowledge: we begin to see that we do not really know all these things. We must first go through the understanding of the spiritual world and then return to what the physical provides. Then only do we understand the physical world.