"You Learn Something New Every Day"
Actually, you learn something old every day. Just because you've just learned it doesn't mean it's new. Other people already knew it, Columbus is a good example of this. Edison and Einstein are the exception.

"The Sky's The Limit"
Well, how can the sky be the limit? The sky never ends. What kind of a limit is that? The earth is the limit. You dig a hole and what do you keep getting? More earth. The earth is the limit.

"You Get What You Pay For"