Matthew Arnold (1822-1888) was a British Victorian poet and humanist critic.
Besides familiarity with "Dover Beach" (his most famous poem), for the GRE Literature Exam, it's enough to know that he was a Classicist with a special fondness for the Greeks, his critical works often have moral or ethical overtones, many of his critical works deal with strongly personal themes, and he liked to bash philistines.
1. "Dover Beach"
-Often seen as an early example of modern sentiments.
-Laments the loss of (religious) faith.