Half of the harm that is done in this world is due to people who want to feel important. They don't mean to do harm. But the harm does not interest them.
The true lover of knowledge naturally strives for truth, and is not content with common opinion, but soars with undimmed and unwearied passion till he grasps the essential nature of things.
In battling evil, excess is good; for he who is moderate in announcing the truth is presenting half-truth. He conceals the other half out of fear of people's wrath.