A Sufi teacher, walking along a road with a student, was assailed by a ferocious dog.
The disciple was furious and cried out:
‘How dare you approach my master in such a manner?’
‘He is more consistent than you are,’ said the Sage, ‘for he barks at anyone, in accordance with his habit and proclivities; while you regard me as your master and are wholly insensitive to the merits of the many illuminates whom we have already passed on this journey, dismissing them without a second glance.’
From: The Way of the Sufi, by Idries Shah.