Game of Thrones original writer won't let pressure rush him

George R.R. Martin has been feeling the heat to finish The Winds of Winter, the long-awaited sixth novel in his best-selling series, A Song of Ice and Fire, but he is not letting the pressure rush his writing.

"There is more pressure every year," Martin said on Monday in San Francisco at the US premiere of the fifth season of Game of Thrones, the HBO television series based on his books. "The main thing is to make the book as good as I can possibly make it."

Martin, 66, has completed five of seven planned novels: The most recent, A Dance With Dragons, came out in 2011, the same year the Emmy-winning TV adaptation first aired. With this season, the series will have exhausted almost all the material from the existing books.