All kinds of art come under the study of aesthetics. Good writing is an art, good administration is an art, maintenance of good health is an art, being always happy within is an art, to live harmoniously with one's atmosphere or environment is an art, to think logically is an art, to be truly good is an art. All things that satisfy are embodied in art. Arts which require for their presentation heavy external material are lowest in the category of aesthetic evaluation. Architecture requires the largest quantity of weighty material.
Sculpture also needs material but in a lesser quantity.
Drawing and painting require the least of materials, just canvas and ink. Music and its attendant forms of aesthesis require no physical material at all, not even ink and pen. What is needed here is just a methodical production of sound. Art is either visual, audible or intellectual. The higher we go in the order of ascent in the scheme of the presentation of beauty, the more enjoyable does the object become, so that powerful literature can shake the whole world in an instant.