Roman sculpture  The study of Roman sculpture is complicated by its relation to Greek sculpture. Many examples of even the most famous Greek sculptures, such as the Apollo Belvedere and Barberini Faun, are known only from Roman Imperial or Hellenistic "copies". At one time, this imitation was taken by art historians as indicating a narrowness of the Roman artistic imagination, but, in the late 20th century, Roman art began to be reevaluated on its own terms: some impressions of the nature of Greek sculpture may in fact be based on Roman artistry. The strengths of Roman sculpture are in portraiture, where they were less concerned with the ideal than the Greeks or Ancient Egyptians, and produced very characterful works, and in narrative relief scenes. Examples of Roman sculpture are abundantly preserved, in total contrast to Roman painting, which was very widely practiced but has almost all been lost. Latin and some Greek authors, particularly Pliny the Elder in Book 34 of his "Natural History", describe statues, and a few of these descriptions match extant works. While a great deal of Roman sculpture, especially in stone, survives more or less intact, it is often damaged or fragmentary; life-size bronze statues are much more rare as most have been recycled for their metal. Most statues were actually far more lifelike and often brightly colored when originally created; the raw stone surfaces found today is due to the pigment being lost over the centuries. Early Roman art was influenced by the art of Greece and that of the neighbouring Etruscans, themselves greatly influenced by their Greek trading partners. An Etruscan speciality was near life size tomb effigies in terracotta, usually lying on top of a sarcophagus lid propped up on one elbow in the pose of a diner in that period. As the expanding Roman Republic began to conquer Greek territory, at first in Southern Italy and then the entire Hellenistic world except for the Parthian far east, official and patrician sculpture became largely an extension of the Hellenistic style, from which specifically Roman elements are hard to disentangle, especially as so much Greek sculpture survives only in copies of the Roman period. By the 2nd century BCE, "most of the sculptors working at Rome" were Greek, often enslaved in conquests such as that of Corinth (146 BCE), and sculptors continued to be mostly Greeks, often slaves, whose names are very rarely recorded. Vast numbers of Greek statues were imported to Rome, whether as booty or the result of extortion or commerce, and temples were often decorated with re-used Greek works.