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Aristotle, Ancient Greek philosopher

Aristotle, Ancient Greek philosopher

Aristotle, Ancient Greek philosopher

Aristotle, Ancient Greek philosopher

Aristotle, ancient Greek philosopher

Xenocrates, Ancient Greek philosopher

Plato, Ancient Greek philosopher

Socrates, Ancient Greek philosopher

Pythagoras, Ancient Greek mathematician

Lysias, Ancient Greek orator

Plato, Ancient Greek philosopher

Homer, Ancient Greek poet

Socrates, Ancient Greek philosopher

Socrates, Ancient Greek philosopher

Joseph Jackson, English typefounder

Arthur Schopenhauer, German philosopher

Sallust, Roman historian

George Berkeley, Irish philosopher

Arthur Schopenhauer, German philosopher

Aristotle,

Sappho, Ancient Greek poet

Cleobulus of Lindos, Greek poet

Charles Townley, British antiquarian

Pedanius Dioscorides, Greek physician

Seneca the Elder, Roman orator

Ancient Greek warrior

Plato, Ancient Greek philosopher

Agrippa, Roman general

Persius, Roman poet

Plato, Ancient Greek philosopher

Karl Popper, Austrian-British philosopher

Jean-Jacques Rousseau, French philosopher

Pythagoras, Ancient Greek mathematician

Socrates, Ancient Greek philosopher

Aristotle, Ancient Greek philosopher

Anaximander, ancient Greek philosopher

Aspasia and Alcibiades, 19th century illustration

Constantine I, Roman emperor

アリストテレス

Archilochus of Paros, Ancient Greek poet

Ancient Greek athletes running, illustration

Heinrich Schliemann, German archaeologist

Henri Becquerel, French physicist

George Boole, British mathematician

Socrates, Ancient Greek philosopher

Galen, Ancient Greek physician

Hercules and the Cercopes, 5th century BC sculpture

Francis Bacon, English philosopher

Plato, Ancient Greek philosopher

Boar hunting in Ancient Greece

Statue by Praxiteles, 17th century

Galen, Ancient Greek physician

Chilon of Sparta, 17th century illustration

Max Planck, caricature

Henry Cavendish, British chemist

Charles Coulomb, French physicist

Heinrich Hertz, German physicist

James Joule, British physicist

Hans Christian Oersted, Danish physicist

Georg Ohm, German physicist

Alessandro Volta, Italian physicist

Robert Watson-Watt, British physicist

Andrew Wiles, British mathematician

John Scott Haldane, caricature

Thucydides and Herodotus, Ancient Greek historians

Aristotle instructing Alexander

Ancient Greek theatre, illustration

Cicero, Roman philosopher

Boar hunting in Ancient Greece

Friedrich von Schelling, German philosopher

Ancient Greek warriors

Jeremy Bentham, British philosopher

Aristophanes, ancient Greek playwright

Hippocrates, Ancient Greek physician

Centaurs, 19th Century illustration

Alfred Wegener, German geophysicist

Charles Darwin, caricature

Andre-Marie Ampere, French physicist

John Bardeen, US physicist

Linus Pauling, US chemist

Daniel Dennett, US cognitive scientist

Jules Verne, French novelist

Alfred Brehm, German zoologist

Carl Merck, German naturalist

Adolf Bastian, German ethnologist

Heinrich Barth, German explorer

Christian Ehrenberg, German naturalist

Carl Ritter, German geographer

Bernhard von Gudden, German anatomist

Ernst von Dechen, German geologist

Friedrich von Frerichs, German optician

Hermann Kolbe, German chemist

Wilhelm Foerster, German astronomer

John Fothergill, English physician

Richard Pulteney, British botanist

William Cuming, Scottish physician

Joseph Lister, British surgeon

Virgil, Roman poet

Cicero, Roman philosopher

Asclepius and Hygieia, ancient Greek god and goddess

Pedanius Dioscorides, Greek physician

Robert Brown, Scottish botanist

Claude Adrien Helvetius, French philosopher

Seven Sages of Greece, 15th century illustration

Pythagoras, Ancient Greek mathematician

Archimedes, caricature

Luigi Galvani, Italian anatomist

Albert Einstein, Swiss-German physicist

Galileo Galilei, Italian astronomer

Hermann von Helmholtz, German physicist

Prokop Divis, Czech scientist

Heinrich Dove, Prussian physicist

John Hunter, Scottish surgeon

Alan Turing, British mathematician

Martin Lichtenstein, German physician

John Logie Baird, caricature

Richard Dawkins, British science writer

James Hutton, British geologist

Robert Oppenheimer, US physicist

Brian Cox, caricature

Galen, Ancient Greek physician, illustration

Voltaire, French author

Voltaire, French author

Gerardus Mercator, Flemish cartographer

Hermann von Wissmann, German explorer

Friedrich Jahn, German gymnastics teacher

Ferdinand von Hebra, Austrian physician

Worldview of Thales of Miletus, artwork

Periander, Greek tyrant

Voltaire, French author

Statue of Zeus at Olympia, illustration

Performance at ancient Greek theatre, illustration

プラトン

ソクラテス

Croesus on the stake, historical artwork

1649 Rene Descartes portrait philosopher

Patrick Moore, British astronomer

Ernst von Bergmann, German surgeon

Albrecht Wilhelm Roth, German botanist

A. van Leeuwenhoek, Dutch microbiologist

Ernest Rutherford, caricature

Confucius, Chinese philosopher

Anne Louise Germaine Necker, French writer

Anne Louise Germaine Necker, French writer

Voltaire, French author and poet

Sigmund Freud, caricature

Roman baths, artwork

Mycenaean warrior, illustration

Bust of Democritus, Greek philosopher, illustration

Thales, Ancient Greek philosopher, illustration

Thucydides, Ancient Greek historian

B. F. Skinner, caricature

John Maynard Smith, caricature

Crawford Long, US surgeon

Louis Stromeyer, German surgeon, artwork

Edward Kelley, English astrologer

Matt Ridley, caricature

Friedrich Heinrich Jacobi, German philosopher

Henry Stanley, Anglo-American explorer

Benjamin Franklin, US scientist

Euclid, Ancient Greek mathematician

Ancient Egyptian scribe working, illustration

John Lindley, British botanist

Laozi, Ancient Chinese philosopher

Gods on Mount Olympus, 19th Century illustration

William Wollaston, English theologian

Charles Sanders Peirce, US philosopher

Priestess Pythia in the Temple of Delphi, illustration

Giving the holy fire, 19th C illustration

Aphrodite of Syracuse.

Aphrodite of Syracuse.

Hermes sculpture of Praxiteles.

Bias of Priene, Greek philosopher

Roger Bacon, English philosopher

Christiaan Huygens, caricature

Dmitri Mendeleev, caricature

James Clerk Maxwell, caricature

Gottfried Leibniz, caricature

Thomas Hobbes, English philosopher

Colosseum in Rome, artwork

Francisco Pizarro, Spanish explorer

Roman temple, artwork

Roman domus, artwork

Ptolemy, Greek astronomer

William Cullen, Scottish physician

Carl Jung, caricature

Alessandro Achillini, Italian philosopher

Ptolemy, Ancient Greek astronomer

Babylonian astronomers

Palace of Knossos, artwork

19th Century velocipede, artwork

19th Century ladies handcar, artwork

Richard Feynman, caricature

Ancient Assyrian bas relief, illustration

Compound microscope, 17th Century artwork

David Hilbert, caricature

Ernst Kummer, caricature

Henri Poincare, caricature

Lord Kelvin, caricature

Tycho Brahe, caricature