I always liked those kinds of photos where there is a human subject, yet no identity; this can be done by photographing the subject from the back, from the side or even photographing them from the front with a lot of light coming from their back (note to self: I'll have to try this as well). Maybe it's just me, but an anonymous subject brings mystery - and mystery is always nice to have.

"In a universe suddenly divested of illusion and lights, man feels an alien, a stranger. His exile is without remedy since he is deprived of the memory of a lost home or the hope of a promised land."

~ Albert Camus