The Constantinian Excerpts, or Excerpta Constantiniana is the conventional name given to the mid-10th Century Byzantine palace encyclopedia commissioned by the scholar emperor Constantine VII ‘Porphyrogenitus’ (reign 945-959). It was a work arranged in 53 thematic topics and compiled from historical materials of 23 Greek historians from classical period to the 9th century. As the Latin title Excerpta suggests, the encyclopedia did not change nor rewrite the materials but rather use the method of excerption, that was, taking a chosen passage out of their original narrative context and put it into a new place according to the intended title of each volume.
This is a companion discussion topic for the original content at https://www.worldhistory.org/The_Constantinian_Excerpts/.