My favorite bit?
Perchik makes a good argument for Communism.
Tevye: You're right!
The Rabbi's son denounces Perchik, and makes a good argument against Communism.
Tevye: You're right too!
Lazar Wolf: Tevye, Tevye, Tevye! He's right, he's right - how can they both be right?
Tevye: You know what? You're right too!
The basis of my whole philosopy of life.