The inner non-physical traits and qualities residing within an individual.
*soft mellow piano music*
Jimmy Kimmel: Handsome doesn't come from here *points to face*. Handsome comes from here *points to heart*. Yeah I have flaws. And Maybe I have the breasts of a 14 year old girl. But that doesn't mean anything. What's important is, I'm handsome withinside.
Lenny Kravitz: FROM THE WITHINSIDE!