Big Bang Theory Quote
Sheldon: You know, I've been thinking about time travel again.
Leonard: Why? Did you hit a roadblock with invisibility?
Sheldon: Put it on the back burner. Anyway, it occurs to me, if I ever did perfect a time machine I would just go into the past and give it to myself, thus eliminating the need for me to invent it in the first place.
Leonard: Interesting.
Sheldon: Yeah, it really takes the pressure off.
Quote from S01E04 - The Luminous Fish Effect