The ordinary lunatic is generally a harmless, isolated case; since everyone sees that something is wrong with him, he is quickly taken care of. But the unconscious infections of groups of so-called normal people are more subtle and far more dangerous.
lunaticquotes
The lunatic who thinks he is a crowned head may be, in a sense, happy, but his happiness is not of a kind that any sane person would envy.
A casual stroll through the lunatic asylum shows that faith does not prove anything.