• 1 · Religion and Magic
• 2 · Nature
• 3 · Human Being, Man in General
• 4 · Society, Civilization, Culture
• 5 · Abstract Ideas and Concepts
• 6 · History
• 7 · Bible
• 8 · Literature
• 9 · Classical Mythology and Ancient History

• Top
• 5 · Abstract Ideas and Concepts
• 52 · Reasoning and Formation of Ideas
• 52B · Reasoning

52B4 · Verification

• 52B41 · Certainty
• 52B42 · Possibility