No one is useless in this world who lightens the burden of it to anyone else.
While there are many experts in the psychoanalysis of individuals, there seems to be little active authority or understanding in the matter of the persistent shared madness in everyday life. It's as if collective mental illness doesn't exist except in the vernacular and in contemporary folk myth, where it remains trapped and politically useless.
There are three kinds of intelligence: one kind understands things for itself, the other appreciates what others can understand, the third understands neither for itself nor through others. This first kind is excellent, the second good, and the third kind useless.
If you can spend a perfectly useless afternoon in a perfectly useless manner, you have learned how to live.
The conceptual artist Ai WeiWei illustrates the schizoid society that rapid change has produced - sometimes by reassembling Ming-style furniture into absurd and useless arrangements, or by carefully painting and antiquing a Coca-Cola logo on an ancient Chinese pot.