It is rather remarkable that the majority of learned men have closed their minds to what seemed bare and simple facts to many people.

It is as fatal as it is cowardly to blink facts because they are not to our taste.

The average man's a coward.

To see what is right and not do it is the worst cowardice.

Superstition would seem to be simply cowardice in regard to the supernatural.

The most deluded people are those who choose to ignore what they already know.

Most fools think they are only ignorant.

Strange enough how creatures of the human-kind shut their eyes to plainest facts; and by the mere inertia of Oblivion and Stupidity, live at ease in the midst of Wonders and Terrors. But indeed man is, and was always, a blockhead and dullard; much readier to feel and digest, than to think and consider.

I have found that many people use arrogance to try to hide their own ignorance.

It is usually futile to try to talk facts and analysis to people who are enjoying a sense of moral superiority in their ignorance.

To see what’s right and not do it is cowardice.

The most ignorant are the most conceited.

The only reason people do not know much is because they do not care to know. They are incurious. Incuriousity is the oddest and most foolish failing there is.

A half-truth is the most cowardly of lies.