- Kant, Immanuel, 1724-1804 (9)
- Ding an sich (2)
- Augustine, Saint, Bishop of Hippo, 354-430 (1)
- Capitalism--Moral and ethical aspects (1)
- Ethics (1)
- Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716 (1)
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- Schelling, Friedrich Wilhelm Joseph von, 1775-1854 (1)
- Schiller, Friedrich, 1759-1805 (1)
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- Thomas, Aquinas, Saint, 1225?-1274 (1)
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- Weber, Max, 1864-1902 (1)