I'm referring to quotes like, "Go ahead and make my day," or "You want the truth? You can't handle the truth."
I've read that actors like them, because they are more likely to win prizes, and that they are good for box office sales.
What is the conventional wisdom regarding the assertion in the last paragraph? And is there an "objective" (scientific) way to determine how memorable a line is likely to be, or is this determined "after the fact," somewhat at random?