Socrates said he was the midwife to his listeners, i.e., he made them reflect better concerning that which they already knew and become better conscious of it. If we only knew what we know, namely, in the use of certain words and concepts that are so subtle in application, we would be astonished at the treasures contained in our knowledge.

--Immanuel Kant, Lectures on Logic ("Vienna Logic"), qtd. in Sowa, Knowledge Representation