The one who lives alone is self-indulgent, showing contempt for all who have sound judgment.
References for Proverbs 18:1
A fool takes no pleasure in understanding, but only in expressing personal opinion.
When wickedness comes, contempt comes also; and with dishonor comes disgrace.
The words of the mouth are deep waters; the fountain of wisdom is a gushing stream.
It is not right to be partial to the guilty, or to subvert the innocent in judgment.
A fool's lips bring strife, and a fool's mouth invites a flogging.
The mouths of fools are their ruin, and their lips a snare to themselves.
The words of a whisperer are like delicious morsels; they go down into the inner parts of the body.
One who is slack in work is close kin to a vandal.
The name of the Lord is a strong tower; the righteous run into it and are safe.
The wealth of the rich is their strong city; in their imagination it is like a high wall.