A man inspects a plastic cover placed over Slave Labour, an artwork attributed to Banksy, in London. This piece of art was put up for sale in Miami last February, but the ensuing outrage led to the auction's cancellation. The mural is now part of an exhibition in London, and is is expected to move to the U.S. afterward. Peter Macdiarmid/Getty Images hide caption

itoggle caption Peter Macdiarmid/Getty Images

The Procuress, painted by Johannes Vermeer in 1656, hangs in a Dresden, Germany, museum in 2004. While this particular work is not in question, Benjamin Binstock argues that other pieces attributed to the Dutch master are by an apprentice and a member of his household. Norbert Millauer/AFP/Getty Images hide caption

itoggle caption Norbert Millauer/AFP/Getty Images

Thomas Cole completed Portage Falls on the Genesee in 1839. Courtesy Seward House Museum hide caption

itoggle caption Courtesy Seward House Museum
Michael Bodycomb/Ursula von Rydingsvard/Galerie Lelong

Left: One of Piet Mondrian's grid-like color block compositions. Right: Caitlin Freeman's cake homage. Art 2013 Mondrian/Holtzman Trust c/o HCR International USA/Reprinted by permission from 'Modern Art Desserts' hide caption

itoggle caption Art 2013 Mondrian/Holtzman Trust c/o HCR International USA/Reprinted by permission from 'Modern Art Desserts'

"Beauty draws us in...It takes us outside ourselves and it motivates us. It's essential to life and to happiness." Asa Mathat/TED hide caption

itoggle caption Asa Mathat/TED