He was somewhat of an
itinerant.
He would go from
mathematicians house to
matheaticians house, stay and work for a few weeks and
then move on. It is said of him that all
of his worldly possesions fit into two bags.
On arriving at a new home he would declare another
roof another proof
I read that once he was walking along the street and tripped. He was lying on the ground
and someone came to help. Erdos said,
Don't disturb me you fool, can't you see I'm working