The brother of Colombian author Gabriel García Márquez has revealed that the 85-year-old Nobel Laureat is suffering from dementia.Jaime García Márquez, a civil engineer, told a group of students at a lecture in the Colombian city of Cartagena that his elder brother often telephones him to ask basic questions. “He has problems with his memory. Sometimes I cry because I feel like I’m losing him,” he said. The author, who has lived in Mexico City since 1961, is one of the most influential and highly-acclaimed living writers. He won the Nobel Prize for Literature in 1982, and Carlos Fuentes, the...