Cluster — 12 works.
Defining concepts
Conscience (11), Guilt (9), Self-Knowledge (5), Lyric (5), Fate and Free Will (4), Mortality (4), Verse Drama (3), Providence (3), Sleep (3), Night (3), Tragedy (2), Temptation (2), Faith (2), Power and Corruption (2), Kingship and Legitimacy (2)