Line of beauty

S-shaped curved line, theory in art

Line of beauty is a term and a theory in art or aesthetics used to describe an S-shaped curved line appearing within an object, as the boundary line of an object, or as a virtual boundary line formed by the composition of several objects. This theory originated with William Hogarth, and is an essential part of Hogarth's theory of aesthetics as described in his 1753 book The Analysis of Beauty. According to this theory, S-shaped curved lines signify liveliness and activity and excite the attention of the viewer as contrasted with straight lines, parallel lines, or right-angled intersecting lines, which signify stasis, death, or inanimate objects.

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