[Constantine's Sword, p. 

JEWS WERE CHARGED WITH POISONING WATER WELLS, MANY TIMES, AND EXECUTED
Jews were believed ready to poison wells, if they could, aiming to kill not just 
Christ, but Christians. Twenty-seven Jews were executed for well poisoning in 
Bohemia in 1163. The charges were repeated in Breslau in 1226, and in Vienna in 
1267. In 1321, Jews were accused of a conspiracy to poison every well in France. 
Many Jews were burned at the stake as a result, and the Jews of Paris were 
expelled from the city. 
[Constantine's Sword, p. 277]

1348 BUBONIC PLAGUE WAS BLAMED ON JEWS POISONING WELLS
When the plagues struck, it was "logical" to think that the source of the 
infection was poisoned wells. The 1348 Black Plague would result in anti-Jewish 
violence that far surpassed the First Crusade, with perhaps three hundred Jewish 
communities, including those in MAinz, Trier, and Cologne, being simply wiped 
out.
[Constantine's Sword, p. 277]

1348 BUBONIC PLAGUE LED TO MORE ANTI-JEWISH VIOLENCE THAN THE FIRST CRUSADE DID
When the plagues struck, it was "logical" to think that the source of the 
infection was poisoned wells. The 1348 Black Plague would result in anti-Jewish 
violence that far surpassed the First Crusade, with perhaps three hundred Jewish 
communities, including those in MAinz, Trier, and Cologne, being simply wiped 
out.
[Constantine's Sword, p. 277]

JEWISH SCHOLARSHIP THRIVED IN THE ISLAMIC WORLD, ESPECIALLY IN BAGHDAD
We have seen how post-antiquity Jewish culture flourished in the area around 
present-day Baghdad, especially with the consolidation of the Babylonian Talmud 
and the work of such scholars as Saadyah ben Joseph (882 - 946), who affirmed 
the compatibility of philosophy and religion.
[Constantine's Sword, p. 301]

JEWISH SCHOLARD SAADYAH BEN JOSEPH: RELIGION AND PHILOSOPHY ARE COMPLETELY COMPATIBLE
We have seen how post-antiquity Jewish culture flourished in the area around 
present-day Baghdad, especially with the consolidation of the Babylonian Talmud 
and the work of such scholars as Saadyah ben Joseph (882 - 946), who affirmed 
the compatibility of philosophy and religion.
[Constantine's Sword, p. 301]

POPE INNOCENT III MADE A CLAIM TO UNIVERSAL POWER ON EARTH
...of Innocent III's claim to universal power...
[Constantine's Sword, p. 305]