The song says it best..

Nessum dorma! ..dorma
Ma il mio mistero e chiuso in me,
Il nome mio nessun sapra!
No, no ..
??
Tramontate, stelle!
Tramontate, stelle!
Al alba vincero,
Vincero, vincero!

No one's sleeping! ..sleeping
I keep my secret locked inside.
No one shall ever know my name!
No, no .. :)
May all the stars set!
May all the stars set!
When dawn breaks, I shall win,
I shall win, I shall win!