The philosophy of Dade's mother emphasizes dreaming of big things. Therefore she encourages Dade to dream to become a person of limited fame. She believes that great people of the past became great, because they had the ability to see new things in ordinary objects. In this connection she mentions people like Thomas Edison and Leonardo da Vinci. So, Dade, as a dutiful son, often would go on top of the store to look up into the sky. He was looking for something, anything, a sign.
It should also be mentioned that Dade's mother was the complete opposite of his father. Dade's father was a practical man who planned everything in minute detail.
The title of the story encapsulates both philosophies of life. The star in "Star Food" refers to the philosophy of Dade's mother (look up); the food in "Star Food" refers to the grocery store and philosophy of Dade's father. As Dade is on the roof, he is between them.