Abu Hamed Al-Ghazālī in Arabic calligraphy — Photo Credit: By السيف ذو الوشاح - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=50000224
An Essay concerning Humane Understanding in four books (1690) by John Locke — Title page of the first edition Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=1998578
Title page from the first edition of Locke's Some Thoughts Concerning Education (1693) — Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=2358759
Title page of Immanuel Kant's Critique of Pure Reason — 1781 edition Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=738347
Frontispiece and first page of chapter one of an early English translation by T. Smollett (et al.) of Voltaire's Candide, London, printed for J. Newbery (et al.), 1762. — Photo Credit: By James Gwin, designer; John Hall (1739–1797), engraver - Private Collection of S. Whitehead, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8112760
Title page from the first edition of Emile — Photo Credit: By Jean-Jacques Rousseau (1712-1778) - Public Domain, https://commons.wikimedia.org/w/index.php?curid=1860008
Spinoza House in The Hague, where Spinoza lived from 1670 until his death in 1677 — Photo Credit: By MLWatts - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=46079106