Temp is 34c, nice and warm

 A story from the flight to Ghana. 

Setting the stage: Sitting the center bank of seats. I am on left end, a fellow in the middle and a woman on the other end. 

Flight was late leaving by 45 minutes waiting for passengers from another flight, fellow starts chatting,  says he is a professor who is teaching at Brock University in St. Catharines but loves researching history, on other end she is a potter whose studio is up the Hamilton mountain and me a priest living in Hamilton  (6 degrees of separation eh) 

A comment was made as to what kind of joke could be made from the P"s potter, professor and a priest sitting in a row

During the flight in my half awake state I come up with a ditty:

There were three P's, a potter, a professor and a priest sitting on a fence: 

...... the potter says the answer is found when making something by hand

...... the professor says the answer is found when researching history

...... the priest says the answer is found when you look within yourself

Drum roll...punch line

WHAT IS THE QUESTION?