Knowledge is power. Information is power. The secreting or hoarding of knowledge or information may be an act of tyranny camouflaged as humility.

Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the useful ones.

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

Evil being the root of mystery, pain is the root of knowledge.

It is harder to conceal ignorance than to acquire knowledge.