Complex sentence: This aesthetic conception led Tolstoy to widen the criteria of what exactly a work of art is; he believed that the concept art embraces any human activity in which one emitter, by means of external signs, transmits previously experienced feelings.
Split into simpler sentences: This aesthetic conception led Tolstoy to widen the criteria of what exactly a work of art is. He believed that the concept art embraces any human activity in which one emitter, by means of external signs, transmits previously experienced feelings.