For almost five hundred years, the Mona Lisa smile has mystified viewers and intrigued historians. Completed in 1515, the Mona Lisa has hidden the lady’s secret well. Now, after years devoted to research and analysis of the works of Leonardo da Vinci, W. N. Varvel has decoded the Mona Lisa and reveals the message within her smile, a secret too dangerous for the artist to acknowledge during his life but one which he hoped future generations would understand and embrace. The coming of the “New...