They say the sky is the limit because when returning from space you will burn up in the atmosphere.

How is sky the limit?...When it can't be touched

A person who limits their interest will limit their mind.

A person who will limit their interest will limit their life.

The Sky?s The Limit.

Patrick said that the problem was that since everything has happened already, it makes it hard to break new ground. Nobody can be as big as the Beatles because the Beatles already gave it a “context.” The reason they were so big is that they had no one to compare themselves with, so the sky was the limit.