Why a sababtical? To be a stranger!

I thought this advice for a sabbatical was neat.  But, Freeman Dyson does it better, of course (ht):

As my friend the physicist Leo Szilard said (number nine in his list of ten commandments): “Do your work for six years; but in the seventh, go into solitude or among strangers, so that the memory of your friends does not hinder you from being what you have become.”

Ok!