The allotted function of art is not, as is often assumed, to put across ideas, to propagate thoughts, to serve as an example. The aim of art is to prepare a person for death, to plough and harrow his soul, rendering it capable of turning to good.
Andrei TarkovskyClearly the hardest thing for the working artist is to create his own conception and follow it, unafraid of the strictures it imposes, however rigid these may be... I see it as the clearest evidence of genius when an artist follows his conception, his idea, his principle, so unswervingly that he has this truth of his constantly in his control, never letting go of it even for the sake of his own enjoyment of his work.
Andrei Tarkovsky