A statue is a sculpture representing one or more people or animals (including abstract concepts allegorically represented as people or animals), normally full-length, as opposed to a bust, and at least close to life-size, or larger. A small statue, usually small enough to be picked up, is called a statuette or figurine.
The definition of a statue is not always clear-cut; equestrian statues, of a person on a horse, are certainly included, and in many cases, such as a Madonna and Child or a Pietà, a sculpture of two people will also be.
Many statues are built on commission to commemorate a historical event, or the life of an influential person. Many statues are intended as public art, exhibited outdoors or in public buildings. Some statues gain fame in their own right, separate from the person or concept they represent, as with the Statue of Liberty.
Ancient statues often survive showing the bare surface of the material of which they are made. For example, many people associate Greek classical art with white marble sculpture, but there is evidence that many statues were painted in bright colours. Most of the colour was weathered off over time; small remnants were removed during cleaning; in some cases small traces remained which could be identified. A travelling exhibition of 20 coloured replicas of Greek and Roman works, alongside 35 original statues and reliefs, was held in Europe and the United States in 2008: Gods in Color: Painted Sculpture of Classical Antiquity. Details such as whether the paint was applied in one or two coats, how finely the pigments were ground, or exactly which binding medium would have been used in each case—all elements that would affect the appearance of a finished piece—are not known. Richter goes so far as to say of classical Greek sculpture, "`All stone sculpture, whether limestone or marble, was painted, either wholly or in part." 
Medieval statues were also usually painted, with some still retaining their original pigments. The colouring of statues ceased during the Renaissance, as excavated classical sculptures, which had lost their colouring, became regarded as the best models.
The Lion man from the Swabian Alps in Germany is the oldest known statue in the world, and dates to 30,000-40,000 years ago. The Venus of Hohle Fels, from the same area, is somewhat later. Throughout history, statues have been associated with cult images in many religious traditions, from Ancient Egypt, Ancient Greece, and Ancient Rome to the present.
Egyptian statues showing kings as sphinxes have existed since the Old Kingdom, the oldest being for Djedefre (c. 2500 BC). The oldest statue of a striding pharaoh dates from the reign of Senwosret I (c. 1950 BC) and is the Egyptian Museum, Cairo. The Middle Kingdom of Egypt (starting around 2000 BC) witnessed the growth of block statues which then became the most popular form until the Ptolemaic period (c. 300 BC).
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While Byzantine art flourished in various forms, sculpture and statue making witnessed a general decline; although statues of emperors continued to appear. An example was the statue of Justinian (6th century) which stood in the square across from the Hagia Sophia until the fall of Constantinople in the 15th century. Part of the decline in statue making in the Byzantine period can be attributed to the mistrust the Church placed in the art form, given that it viewed sculpture in general as a method for making and worshiping idols. While making statues was not subject to a general ban, it was hardly encouraged in this period. Justinian was one of the last Emperors to have a full-size statue made, and secular statues of any size became virtually non-existent after iconoclasm; and the artistic skill for making statues was lost in the process.
Starting with the work of Maillol around 1900, the human figures embodied in statues began to move away from the various schools of realism that had held them bound for thousands of years. The Futurist and Cubist schools took this metamorphism even further until statues, often still nominally representing humans, had lost all but the most rudimentary relationship to the human form. By the 1920s and 1930s statues began to appear that were completely abstract in design and execution.
The Mermaid of Copenhagen, 1903
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