Art is a diverse range of human activities in creating visual, auditory or performing artifacts (artworks), expressing the author's imaginative or technical skill, intended to be appreciated for their beauty or emotional power. In their most general form these activities include the production of works of art, the criticism of art, the study of the history of art, and the aesthetic dissemination of art.
Design is the creation of a plan or convention for the construction of an object, system or measurable human interaction (as in architectural blueprints, engineering drawings, business processes, circuit diagrams, and sewing patterns). Design has different connotations in different fields (see design disciplines below). In some cases, the direct construction of an object (as in pottery, engineering, management, coding, and graphic design) is also considered to use design thinking.
In European academic traditions, fine art is art developed primarily for aesthetics or beauty, distinguishing it from applied art, which also has to serve some practical function, such as pottery or most metalwork.
Usually the work of several generations is needed to develop that formal system which later is called the style of the art, from its simple beginning to the wealth of elaborate forms... The interest of the artist is concentrated on this crystallization, where the material... takes, through his action, the various forms that are initiated by the first formal concepts of this style. After completion the interest must fade again, because... "interest" means... to be with... to take part in a process of life... [H]ow far the formal rules of style represent that reality of life which is meant by the art cannot be decided from the formal rules.
Werner Heisenberg, Physics and Philosophy: The Revolution in Modern Science (1958)
Good design is also an act of communication between the designer and the user, except that all the communication has to come about by the appearance of the device itself. The device must explain itself.
Donald Norman (2002), The Design of Everyday Things, Introduction to the 2002 Edition
A fairly clear line separated advertisement from art. ... The first effect of the triumph of the capitalist (if we allow him to triumph) will be that that line of demarcation will entirely disappear. There will be no art that might not just as well be advertisement.
G. K. Chesterton, Utopia of Usurers (1917), p. 6