First day of class, the professor asks the young seminarian: "What is similar about the Jesuit and Dominican Orders?"
"Well," the young seminarian replies, "They were both founded by Spaniards; St. Dominic for the Dominicans and St. Ignatius of Loyola for the Jesuits. They were also both founded to combat heresy; the Dominicans to fight the Albigensians and the Jesuits to fight the Protestants.
"Very good," the professor replies, "Now can you tell me what is different about the Jesuit and Dominican Orders?"
The seminarian ponders for a minute then replies: "Have you met any Albigensians lately?"