Sheldon: I must say, Amy, I was very impressed to see that Bernadette got her PhD.
Amy: It's indeed admirable. Although, it is microbiology.
Sheldon: Your doctorate is in neurobiology. I fail to see the distinction.
Amy: I'll make it simple for you. I study the brain, the organ responsible for Beethoven's Fifth Symphony. Bernadette studies yeast, the organism responsible for Michelob Lite.

  »   More Quotes from The Big Bang Theory
  »   Back to the TV Quotes Database