The motion picture medium has an extraordinary range of expression. It has in common with the plastic arts the fact that it is a visual composition projected on a two-dimensional surface; with dance, that it can deal in the arrangement of movement; with theatre, that it can create a dramatic intensity of events; with music, that it can compose in the rhythms and phrases of time and can be attended by song and instrument; with poetry, that it can juxtapose images; with literature generally, that it can encompass in its sound track the abstractions available only to language.