Leo Tolstoy Quote

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.

What to Do?: Thoughts Evoked by the Census of Moscow (ed. 1887)