Alton, Eduard (1803-1854) IV
Aristotel (384-322 î. Chr.) III, XVI.4, XVII.8
Avenarius, Richard (1843-1896) IX
Batsch, August Karl (1761-1802) II
Bayle, Pierre (1647-1706) XI
Blumenbach, Johann Friedrich (1752-1840) III
Böttiger, Karl August (1760-1835) IV
Bruno, Giordano (1548-1600) XI
Büchner, Ludwig (1824-189) XVII.4
Camper, Pierre (1722-1789) III
de Candolle, Augustin Pyrame (1778-1841) IV
Cohn, Ferdinand (1828-1898) II
Copernic, Nicolaus (1473-1543) IV
Cuvier, George Baron von (1769-1832) IV
Darwin, Charles (1809-1882) II, IV, V, XVI.1
Descartes, René (1596-1650) XVI.4, XVII.1, XVII.5
Dietrich, Friedrich Gottlieb (1765-1850) II
Du Bois-Reymond, Emil (1818-1896) XVII.1-5
Eckermann, Johann Peter (1792-1854) IV
Einsiedel, August Hildebrand von (1721-1793) III
Elie de Beaumont, Léonce (1798-1874) XIII
Faraday, Michael (1791-1867) XVII.5
Fichte, Johann Gittlieb (1762-1814) IV, IX, X.2, XI, XVI.4
Forster, Georg (1754-1794) III
Freytag, Gustav (1816-1895) X.5
Galilei, Galileo (1564-1642) V
Geoffroy Saint-Hilaire, Etienne (1772-1844) IV
Gingins-Lassaraz, Frédéric Charles Baron de (1790-1863) IV
Gleichen, Wilhelm Friedrich von (1717-1783) II
Haeckel, Ernst (1834-1919) IV, V
Harp, Adolf (1857-1927) XI
Hartmann, Eduard von (1842-1906) VI, X.5, XI, XIV
Hegel, Georg Wilhelm Friedrich (1770-1831) IV, VI, X.3, XI, XIII,
XVI.4
Helmholtz, Hermann von (1821-1894) XVI.4
Heraclit (aprox. 540-480 î. Chr.) XVI.2
Herbart, Johann Friedrich (1776-1841) X.2
Herder, Johann Gottfried von (1744-1803) II, III
Hertz, Heinrich (1857-1894) XVI
Hill, John (1716-1775) II
Holbach, Dietrich Baron von (1723-1789) II
Humboldt, Fraţii III
Hutton, James (1726-1797) XIII
Huyghens, Christian (1629-1695) XVII.4
Jacobi, Friedrich Heinrich (1743-1819) II, III, IV, V, XI,
XVIII
Jacobi, Karl Maximilian (1775-1858) III
Josephi, Johann Wilhelm (1673-1845) III
Kalb, Charlotte von, născută Marschalk von Ostheim (1761-1843) III
Kant, Immanuel (1724-1804) IV, VIII, IX, X.5, XI,
XVI.5, XVII.5, XVIII
Keil, Robert (1826-1894) II, III
Kepler, Johannes (1571-1630) IV
Kirchhoff, Gustav Robert (1824-1887) XVII.4
Klettenberg, Susanna Katharina von (1723-1774) II
Knebel, Karl Ludwig von (1744-1834) I, II, III
Krug, Wilhelm Traugott (1770-1842) IX
Lampa, Anton XVII.4-5
Langenbeck, Konrad Johann Martin (1776-1851) III
Lavater, Johann Kaspar (1741-1801) III, IV
Leibniz,Gottfried Wilhelm, Freiherr von (1646-1716) X.2
Linné, Karl (1707-1778) II
Locke, John (1632-1704) IX, XVII.5
Loder, Justus Christian von (1753-1832) III, IV
Martius, Karl Friedrich Philipp von (1794-1868) IV
Merck, Johann Heinrich (1741-1791) II, III
Mill, John Stuart (1806-1873) IX, XVI
Moleschott, Jakob (1822-1893) XVII.4
Moritz, Karl Philipp (1757-1793) II
Müller, Johannes (1801-1858) XVII.4
Nees von Essenbeck, Christian Gottfried (1776-1858) IV
Newton, Sir Isaak (1643-1727) XVI.2, XVI.6, XVII.9
Oken, Lorenz (1779-1851) III
Paracelsus, Teophrastus (1493 sau 1494-1541) II
Platon (427-347 î. Chr.) XVI.4, XVII.8
Reiffenstein, Johann Friedrich (1719-1793) II
Rousseau, Jean-Jacqes (1712-1778) II
Sachsen-Weimar-Eisenach, Karl August, Conte de (1757-1828) II, III, XIII
Sachsen-Weimar-Eisenach, Luise Auguste, Contesă de (1757-1830) XIII
Schelling, Friedrich Wilhelm von (1755-1854) III, V, IX, X.2, XI
Schiller, Friedrich von (1759-1805) IV
Schleiden, Matthias Jakob (1804-1881) IV
Schopenhauer, Arthur (1788-1860) IX, X.2, XI, XVI.4
Schröer, Karl Julius (1825-1900) Prefaţa, XI
Schrön, Heinrich Friedrich (1799-1875) XIV
Shakespeare (1564-1616) IV, VIII
Sömmerring, Samuel Thomas (1755-1830) III, IV
Spinoza, Benedictus (1632-1677) IV, V, XI, XVI.4, XVIII
Stein, Charlotte von, născută Schardt (1742-1827) II, III, XIII
Stein, Friedrich von (1772-1844) III
Tönnies, Ferdinand (1855-1936) XVIII
Vic d’Azyr, Félix (1748-1794) III
Voigt, Friedrich Sigismund (1781-1850) IV
Volkelt, Johannes (1848-1930) IX, X.2
Vorländer, Karl (1860-1928) XVIII
Wackenroder,Wilhelm Heinrich (1773-1798) IV
Waitz, Johann Christian Wilhelm (1766-1796) III
Weber, Abraham Gottlob (1749-1817) III
Wolf, Friedrich August (1759-1824) IV
Wolff, Caspar Friedrich (1733-1794) IV, X.2
Wundt, Wilhelm (1832-1920) XVII.1, XVII.4, XVII.7
Zimmermann, Johann Georg (1728-1795) III
