motto 1:

"The essence of a documentary is reality. Something that really exists: real people, real events, real feelings, moods, faces, thoughts, a real tear.
The essence of this genre is the author's personal, subjective attitude. Above all this is usually expressed by the film's construction (dramaturgy - if one prefers), and achieved through hard and fantastically interesting work in an editing room.
A documentary does not tell the story of the author; it shows the world and people from the author's point of view.
Sharpness, expressiveness and the vividness of the author's outlook gives the film it's status."

Krzysztof Kieślowski