Vulnerability.
It's the elephant at the circus asked to perform for hundreds of people.
It's the mouse singing for the wolves.
It's in every moment that we stand up and expose ourselves to possible embarrassment, failure, or critique. It's in the moments we feel as though we could be eaten alive--or wish we could be eaten alive to avoid humility. It's in the moments we can say NO to do something that we feel as though may cause us sadness or grief. It is in the moments we will later look back on and say "what if?" It's in the moments we feel scared--yet safe--all at once. It's in the moments we discover our emotions, our feelings, our deepest fears. It's in the moments that we find our deepest strengths. It is in the moments where we find ourselves.
I'll go out on a limb to say that vulnerability is quite beautiful.