Roberto's character Guido is a witty, amiable, positive man, and his attitude toward life and being tender with other people's feelings is the base upon which this very charming story is built. The worst thing is being unable to tell you any details. There is no word. Life is Beautiful neither trivializes WWII nor belabors the point of its tragedies. The magic in the love story seems to be pure and simple magic, yet we can see the gears and workings behind it.
Unbelievable moments happen in a perfectly logical happenstance.
If you have seen Life is Beautiful already, you will smile at that line. Everything is so organic, so right, it just flows like tears at a wedding. The Italian countryside and the cities are lovely, the people in them so charming, even the antagonists. Roberto is such a charismatic lead, he can get away with anything on screen. To tell more would be to ruin it, but it is him that makes life beautiful for all those around him.