The motive behind criticism often determines its validity. Those who care criticize where necessary. Those who envy criticize the moment they think that they have found a weak spot.
One does not have to be a philosopher to be a successful artist, but he does have to be an artist to be a successful philosopher. His nature is to view the world in an unpredictable albeit useful light.
She gazed at him alluringly and grinned. No further words were necessary.