I’m not speaking so much about the internal mind of bruce wayne, though that’s interesting to think about. In a lot of ways bruce is superhuman in his ability to do justice to the concept of batman.
I was more saying that by putting on the mask, bruce created a symbol. Just like the Guy Fawkes mask was a symbol in V for Vendetta. Ideas take on a life outside of meat space. “Ideas are bulletproof”.
But as #[3] pointed out, ideas are meaningless without humans and human action. In order to become batman, you need to unite the mask (the ideal of batman), with action and heroism