5 · Abstract Ideas and Concepts
52 · Reasoning and Formation of Ideas
52A · Intelligence and Intellectual Faculties
52AA · Intelligence and Intellectual Faculties (opposing concepts)
52AA5 · Ignorance; 'Ignoranza', 'Ignoranza di tutte le cose', 'Ignoranza in un ricco senza lettere' (Ripa)
52AA52 · Misjudgment
52AA522 ·
Delusion, Fallacy; 'Prima Impressione' (Ripa)