"As for the lesson, you may like to decide whether the man's heart is so full that his mouth is overflowing, so that he has to talk to anybody about it, even a child, or whether the child has first to draw the knowledge out of him, by knowing him and showing interest.  Again, there may be two of them who cannot restrain themselves, the one from asking, and the other from giving the answer: a bond of this sort would be interesting, for one day it is going to be rudely snapped...

For it is what happens between people that provided them with all the material that they can discuss, criticize, alter...

And here once again let us recall that their task is to entertain the children of the scientific age, and to do so with sensuousness and humour.  This is something that we can not tell ourselves too often..."

A Short Organum for the Theatre.  B. Brecht.  p.199-204