"There are two threats to reason, the opinion that one knows the truth
about the most important things and the opinion that there is no truth
about them. Both of these opinions are fatal to philosophy; the first
asserts that the quest for truth is unnecessary, while the second
asserts that it is impossible. The Socratic knowledge of ignorance,
which take to be the beginning point of all philosophy, defines the
sensible middle ground between two extremes."