1. Paradoxes

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3. Rights: Please note that if this image is under copyright, you may need to contact one or more copyright owners for any use that is not permitted under the ARTstor Terms and Conditions of Use or not otherwise permitted by law. While ARTstor tries to update contact information, it cannot guarantee that such information is always accurate. Determining whether those permissions are necessary, and obtaining such permissions, is your sole responsibility.

4. Rights: Please note that if this image is under copyright, you may need to contact one or more copyright owners for any use that is not permitted under the ARTstor Terms and Conditions of Use or not otherwise permitted by law. While ARTstor tries to update contact information, it cannot guarantee that such information is always accurate. Determining whether those permissions are necessary, and obtaining such permissions, is your sole responsibility.

5. Rights: Please note that if this image is under copyright, you may need to contact one or more copyright owners for any use that is not permitted under the ARTstor Terms and Conditions of Use or not otherwise permitted by law. While ARTstor tries to update contact information, it cannot guarantee that such information is always accurate. Determining whether those permissions are necessary, and obtaining such permissions, is your sole responsibility.

6. Giuseppe Arcimboldo - Vertumnus, Rudolf II

7. Vegetables In A Bowl Or The Gardener
Giuseppe Arcimboldo

8. Rights: Please note that if this image is under copyright, you may need to contact one or more copyright owners for any use that is not permitted under the ARTstor Terms and Conditions of Use or not otherwise permitted by law. While ARTstor tries to update contact information, it cannot guarantee that such information is always accurate. Determining whether those permissions are necessary, and obtaining such permissions, is your sole responsibility.

9. Rights: © 2008 Artists Rights Society (ARS), New York / VEGAP, Madrid

10. Source: Data from: University of California, San Diego

11. Source: Data from: University of California, San Diego

12. Rights: Please note that if this image is under copyright, you may need to contact one or more copyright owners for any use that is not permitted under the ARTstor Terms and Conditions of Use or not otherwise permitted by law. While ARTstor tries to update contact information, it cannot guarantee that such information is always accurate. Determining whether those permissions are necessary, and obtaining such permissions, is your sole responsibility.

13. Rights: This image is available for uses permitted under the ARTstor Terms and Conditions of Use, such as teaching and study, as well as for scholarly publications, through the Images for Academic Publishing (IAP) initiative. If you are seeking to use this image for scholarly publication, you should click on the IAP icon below the thumbnail image.

14. M.C. ESCHER, Drawing Hands, 1948, lithograph, 11 1/8 x 13 1/8 inches, The Magical World of M.C. Escher Exhibition # 355

15. The Treachery of Images (This is Not a Pipe) (La trahison des images [Ceci n'est pas une pipe])
René Magritte (Belgium, )
Belgium, 1929Paintings
Oil on canvas

16. René Magritte (Belgian, 1898–1967)
The Empire of Light, II
Date:1950Medium:Oil on canvasDimensions:31 x 39" (78.8 x 99.1 cm) Credit Line:Gift of D. and J. de MenilMoMA Number: Copyright:© 2014 C. Herscovici, Brussels / Artists Rights Society (ARS), New York

18. Banksy Riot