One day a 6 year old girl was sitting in a classroom.
The teacher was going to explain evolution to the children.

The teacher asked a little boy: Tommy do you see the tree outside?
TOMMY: Yes.
TEACHER: Tommy, do you see the grass outside?
TOMMY: Yes.
TEACHER: Go outside and look up and see if you can see the sky.
TOMMY: Okay. (He returned a few minutes later) Yes, I saw the sky.
TEACHER: Did you see God?
TOMMY: No.
TEACHER: That's my point. We can't see God because he isn't there. He just doesn't exist.
A little girl spoke up and wanted to ask the boy some questions.
The teacher agreed and the little girl asked the boy:
Tommy, do you see the tree outside?
TOMMY: Yes.
LITTLE GIRL: Tommy do you see the grass outside?
TOMMY: Yeeeeeeeess (getting tired of the questions by this time!).
LITTLE GIRL: Did you see the sky?
TOMMY: Yessssss!
LITTLE GIRL: Tommy, do you see the teacher?
TOMMY: Yes
LITTLE GIRL: Do you see her brain?
TOMMY: No
LITTLE GIRL: Then according to what we were taught today in school, she must not have one!
(You Go Girl!)