• 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
• 4 · Society, Civilization, Culture
• 49 · education, science and learning
• 49C · aspects of science in general
• 49C2 · philosophy
• 49C21 · philosophical disciplines

49C213 · theory of knowledge

• 49C2131 · Plato's cave, 'antrum Platonicum'
• 49C213(+0) · theory of knowledge (+ variant)