A mere love for books would not make one a bookseller in Heybeliada, an island of around 5,000 people off the coast of Istanbul in the Sea of Marmara, where foot traffic increases only during the summer months. "It demands an act of courage," said Nazim Hikmat Erkan, a bearded middle-aged antiquarian, sitting in an armchair outside his shop, which sells old books. (All photos by Riyaz ul Khaliq for ...