A hermit is a mad man. Without friends and wife and child, there is
nothing left worth living for. The unsocial are the enemies of joy. They
are filled with egotism and envy, with vanity and hatred. People who
live much alone become narrow and suspicious. They are apt to be the
property of one idea. They begin to think there is no use in anything.
They look upon the happiness of others as a kind of folly. They hate
joyous folks, because, way down in their hearts, they envy them.