Charles Batteux had somewhat different goals. When he published The Fine Arts Reduced to a Single Principle in 1746, he took up a challenge: to establish Aristotelian ideas firmly as the general basis for a unified system of the arts. The main concept on which he focuses is mimesis, but generalized to any kind of art (thus going beyond Aristotle or Horace). To achieve this generalization, he distinguishes the liberal arts, of which the object is pleasure (i.e., music, poetry, painting, sculpture