Joseph Kosuth

" Conceptual art, then, is an inquiry by artists that understand that artistic activity is not solely limited to the framing of art propositions, but further the investigation of the function, meaning, and use of any and all (art) propositions, and their consideration within the concept of the general term 'art'. And as well, that an artist's dependence on the critic or writer to cultivate the conceptual implications of his art propositions, and argue their explication, is either intellectual irresponsibility or the naivest kind of mysticism"