Sheldon: Why are you crying?
Penny: Because I'm stupid.
Sheldon: Well, that's no reason to cry. One cries because one is sad. For example, I cry because others are stupid, and that makes me sad.
Penny: Because I'm stupid.
Sheldon: Well, that's no reason to cry. One cries because one is sad. For example, I cry because others are stupid, and that makes me sad.
Sheldon : Why are you crying?
Penny : Because I'm stupid.
Sheldon : Well, that's no reason to cry. One cries because one is sad. For example, I cry because others are stupid, and that makes me sad.
http://www.tv-quotes.com/shows/the-big-bang-theory/quote_20912.html
