Authors:

These old knights are more cunning than you think, or they would never have lived to see their first grey hair.

George R. R. Martin (2012). “George R. R. Martin's A Game of Thrones 5-Book Boxed Set (Song of Ice and Fire Series): A Game of Thrones, A Clash of Kings, A Storm of Swords, A Feast for Crows, and and A Dance with Dragons”, p.1110, Bantam
These old knights are more cunning than you think, or they would never have lived to see their first grey hair.