True art and true science possess two unmistakable marks: the first, an inward mark, which is this, that the servitor of art and science will fulfil his vocation, not for profit but with self- sacrifice; and the second, an external sign, his productions will be intelligible to all the people whose welfare he has in view.
Leo TolstoyDrama, instead of telling us the whole of a man's life, must place him in such a situation, tie such a knot, that when it is untied, the whole man is visible.
Leo Tolstoy