A man is likely to mind his own business when it is worth minding. When it is not, he takes his mind off his own meaningless affairs by minding other people's business.

This minding of other people's business expresses itself in gossip, snooping and meddling, and also in feverish interest in communal, national and racial affairs. In running away from ourselves we either fall on our neighbor's shoulder or fly at his throat.

The True Believer, Section 10