Geometrical life

Elvish : Mom did you realize life is so geometrical ?
Mom : How did you conclude that ?
Elvish : Because of the things you say to us often,Life goes around in a circle , you live in a box and try to think outside it and without family life is pointless !!

Knock before you enter

Mom :Always knock on a door before you enter 
Elvish : You mean any door ?
Mom : Yes ,if its closed ,knock and then enter. It is just good manners .
Elvish : Except when it is your class room door. When it is closed, you pass !!