This tutorial discusses the importance of works of art, and distinguishes between works of art and artifacts.
Source: Image of Adoration of the Magi, Leonardo da Vinci, Public Domain, http://en.wikipedia.org/wiki/File:Leonardo_da_Vinci_-_Adorazione_dei_Magi_-_Google_Art_Project.jpg; Image of Mona Lisa, Leonardo da Vinci, Public Domain, http://en.wikipedia.org/wiki/File:Mona_Lisa,_by_Leonardo_da_Vinci,_from_C2RMF_retouched.jpg; Image of Amphora, Public Domain, http://en.wikipedia.org/wiki/File:Amphora_protogeometric_BM_A1123.jpg
The idea that a work of art is the result of an artist's unique vision and not of outside influences, such as other works of art.
A work of outstanding skill or artistry.
An object made by a human being, in particular an object of historical or cultural interest.
An object that has been designed for its aesthetic appeal, or an object that has come to be appreciated as a work of art.