Byzantinism or Byzantism is a term used in political science and philosophy to denote the political system and culture of the Byzantine Empire, and its spiritual successors, in particular, the Balkan states, the Ottoman Empire and Russia. The term byzantinism itself was coined in the 19th century. The term has primarily negative associations, implying complexity and autocracy.

This negative reputation stressed the confusing complexities of the Empire's ministries, the elaborateness of its court ceremonies, as well as its supposed lack of backbone in martial affairs. Likewise, the "Byzantine system" also suggests a penchant for intrigue, plots and assassinations and an overall unstable political state of affairs. The term has been criticized by modern scholars for being a generalization that is not very representative of the reality of the Byzantine aristocracy and bureaucracy.

The Byzantine Empire was the medieval continuation of the Roman Empire and thus had a complex system of aristocracy and bureaucracy which was derived from earlier Roman systems. At the apex of the pyramid stood the Emperor, sole ruler and divinely ordained, and beneath him a multitude of officials and court functionaries operated the administrative machinery of the Byzantine state. In addition, a large number of honorific titles existed, which the emperor awarded to his subjects or to friendly foreign rulers.

El Greco born Doménikos Theotokópoulos, (1541 – 7 April 1614) was a painter, sculptor and architect of the Spanish Renaissance. "El Greco" (The Greek) was a nickname, a reference to his ethnic Greek origin, and the artist normally signed his paintings with his full birth name in Greek letters, Δομήνικος Θεοτοκόπουλος (Doménikos Theotokópoulos), often adding the word Κρής (Krēs, "Cretan").

El Greco was born on Crete, which was at that time part of the Republic of Venice, and the centre of Post-Byzantine art. He trained and became a master within that tradition before travelling at age 26 to Venice, as other Greek artists had done. In 1570 he moved to Rome, where he opened a workshop and executed a series of works. During his stay in Italy, El Greco enriched his style with elements of Mannerism and of the Venetian Renaissance. In 1577, he moved to Toledo, Spain, where he lived and worked until his death. In Toledo, El Greco received several major commissions and produced his best-known paintings.