Quote from Tim in Doctor in the House
Professor Garver: Hey, does everybody know what time it is? Tim: Uh... Ph.D. time. Professor Garver: [laughs] It's great to see you again, Tim. Tim: And you would be? Professor Garver: Your old philosophy teacher - Professor Garver. Tim: Ah, yes, philosophy. "I think, therefore I am." Descartes. Professor Garver: Good for a guy who was never in class. Tim: Well, I thought I was there, therefore I probably was. Professor Garver: I passed you, therefore you're lucky.