Some say that he resembles Papa Smurf. (But some would claim that description fits ProfessorBorrelli better.) Others think he resembles GoD -- after all, he's got the white beard, and he makes the universe work.
Possibly looks like George Lucas. Definitely is a Jedi Master.
"If all the air molecules in the room suddenly stopped moving, they'd fall to the ground, and we'd have a bunch of air just... lying on the floor."
"Even though it's elegant, it's still good physics."
"I did Hella-well." --an ex-Time Sucker, when asked how s/he did on his/her Relativity exam.
"It tries to fix things by blowing up."
"How many questions are on this quiz?" --RichardGarfinkel "I don't know, I can't count that high." --ProfessorHelliwell
"Physics is not for the faint-hearted."
"I have drawn on the board, a blob" --As the opener of a lecture.