Have you seen an Angel?

i havnt. i dont think i will see an angel in this world.

I don't think I would know if I've seen an angel, what do they really look like? I know we have images similar to the one you posted which were created during the middle ages, wings, halos etc, but is that how they actually appear? They may appear just as ordinary people who perhaps act a little differently to normal people, how can an angel be defined? Its a little like experiencing miracles, how do we know it is a miracle and not just an extraordinary course of events with an extraordinarily good outcome?