What is most of our boasted so-called knowledge but a conceit that we know something, which robs us of the advantage of our actual ignorance?

Which is the best man to deal with,-he who knows nothing about a subject, and, what is extremely rare, knows that he knows nothing, or he who really knows something about it, but thinks that he knows all?

How can he remember well his ignorance - which his growth requires - who has so often to use his knowledge?

The only sin in the world is ignorance.

How can we remember our ignorance, which our growth requires, when we are using our knowledge all the time?

There is a chasm between knowledge and ignorance which the arches of science can never span.