Encyclopædia Britannica Eleventh Edition in the context of "Mounted infantry"

Neopythagoreanism (or neo-Pythagoreanism) was a school of Hellenistic and Ancient Roman philosophy which revived Pythagorean doctrines. Neopythagoreanism was influenced by middle Platonism and in turn influenced Neoplatonism. It originated in the 1st century BC and flourished during the 1st and 2nd centuries AD. The Encyclopædia Britannica Eleventh Edition describes Neopythagoreanism as "a link in the chain between the old and the new" within Hellenistic philosophy. Central to Neopythagorean thought was the concept of a soul and its inherent desire for a unio mystica with the divine. The word Neopythagoreanism is a modern (19th century) term, coined as a parallel of "Neoplatonism".

A hostage is a person seized by an abductor in order to compel another party, one which places a high value on the liberty, well-being and safety of the person seized—such as a relative, employer, law enforcement, or government—to act, or refrain from acting, in a certain way, often under threat of serious physical harm or death to the hostage(s) after expiration of an ultimatum. The Encyclopædia Britannica Eleventh Edition defines a hostage as "a person who is handed over by one of two belligerent parties to the other or seized as security for the carrying out of an agreement, or as a preventive measure against certain acts of war."

A party who seizes one or more hostages is known as a hostage-taker; if the hostages are present voluntarily, then the receiver is known as a host.

The White Elster (German: Weiße Elster [ˌvaɪsə ˈʔɛlstɐ] ; Czech: Bílý Halštrov) is a 257-kilometre-long (160 mi) river in central Europe. It is a right tributary of the Saale. The source of the White Elster is in the westernmost part of the Czech Republic, in the territory of Hazlov. After a few kilometres, it flows into eastern Germany where it cuts through the Vogtland in (according to the Encyclopædia Britannica) a "deep and picturesque valley". In Germany it flows through the states of Saxony, Thuringia and Saxony-Anhalt. The White Elster flows through the cities of Plauen, Greiz, Gera, Zeitz, Pegau and Leipzig, and into the river Saale in Halle.

The Complete Classics Collection of Ancient China (or the Gujin Tushu Jicheng) is a vast encyclopedic work written in China during the reigns of the Qing dynasty emperors Kangxi and Yongzheng. It was begun in 1700 and completed in 1725. The work was headed and compiled mainly by scholar Chen Menglei (陳夢雷). Later on the Chinese painter Jiang Tingxi helped work on it as well.

The encyclopaedia contained 10,000 volumes. Sixty-four imprints were made of the first edition, known as the Wu-ying Hall edition. The encyclopaedia consisted of 6 series, 32 divisions, and 6,117 sections. It contained 800,000 pages and over 100 million Chinese characters, making it the largest leishu ever printed. Topics covered included natural phenomena, geography, history, literature and government. The work was printed in 1726 using copper movable type printing. It spanned around 10 thousand rolls (卷). To illustrate the huge size of the Complete Classics Collection of Ancient China, it is estimated to have contained 3 to 4 times the amount of material in the Encyclopædia Britannica Eleventh Edition.

Hippolyte Adolphe Taine (21 April 1828 – 5 March 1893) was a French historian, critic and philosopher. He was the chief theoretical influence on French naturalism, a major proponent of sociological positivism and one of the first practitioners of historicist criticism. Literary historicism as a critical movement has been said to originate with him. Taine is also remembered for his attempts to provide a scientific account of literature.

Taine had a profound effect on French literature; Maurice Baring wrote in the 1911 Encyclopædia Britannica that "the tone which pervades the works of Zola, Bourget and Maupassant can be immediately attributed to the influence we call Taine's." Out of the trauma of 1871, Taine has been said by one scholar to have "forged the architectural structure of modern French right-wing historiography."

William Cecil, 1st Baron Burghley (13 September 1520 – 4 August 1598), was an English statesman, the chief adviser of Queen Elizabeth I for most of her reign, twice Secretary of State (1550–1553 and 1558–1572) and Lord High Treasurer from 1572. In his description in the Encyclopædia Britannica Eleventh Edition, A.F. Pollard wrote, "From 1558 for forty years the biography of Cecil is almost indistinguishable from that of Elizabeth and from the history of England." He was raised to the peerage as Baron Burghley in February 1571.

Cecil set as the main goal of English policy the creation of a united and Protestant British Isles. His methods were to complete the control of Ireland, and to forge an alliance with Scotland. Protection from invasion required a powerful Royal Navy. While he was not fully successful, his successors agreed with his goals. In 1587, Cecil persuaded the Queen to order the execution of the Roman Catholic Mary, Queen of Scots, after she was implicated in a plot to assassinate Elizabeth.