Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
Bibliothèque Sainte-Geneviève, Paris: a wall of the library with two bookcases of books and busts of Plato, Socrates, Euclid and Cicero. Engraving by F. Ertinger, ca. 1688. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.