Ignorance, the root and stem of all evil.

When we first start facing truth, the process may be frightening, and many people run back to their old lives. But if you continue to seek truth, you will eventually be able to handle it better. In fact, you want more! It's true that many people around you now may think you are weird or even a danger to society, but you don't care. Once you've tasted the truth, you won't ever want to go back to being ignorant!

To be curious about that which is not one's concern while still in ignorance of oneself is ridiculous.

The penalty good men pay for indifference to public affairs is to be ruled by evil men

Entire ignorance is not so terrible or extreme an evil, and is far from being the greatest of all; too much cleverness and too much learning, accompanied with ill bringing-up, are far more fatal.

And sometimes ignorance is even harder to deal with than deliberate evil.