"How long have you been writing plays?"
"Oh ... several years."
"And how many have you written?"
"Quite a few."
"And how much have you made at it?"
"Next to nothing, but—"
"Then why do you persist?"
"Because it's the thing I want to do."
"But you can't make any money at it—"
"I may make a lot before long. Meanwhile, I like it."