One patient mentioned a flying dream. Of course it was replete with dual sense of being "high" because he is an addict, but when he mentioned "not being limited by gravity" and "defying gravity," my ears pricked up.
I asked him to anthropomorphize gravity (in plainer English, I asked him to pretend that gravity was controlled by a person, and what that person might think about him). He said that he might feel
"bedazzled, curious, angry, embarrassed"
He related these feelings to cops and judges, but the relation went further and back to his mother who didn't like client riding motorcycles and dirt bikes when he was young...
Even when we get to abstractions like Time, Space, the "Law of Nature," sleep, etc. we are still dealing with relations that ultimately defused from higher interpersonal (i.e. oedipal) relations. Of course, a natural disaster, having one's city/home bombed, and other interactions with these entities can be traumatic itself and cause a defusion (as can chemically induced feelings). However, most have an interpersonal origin.