Society and Class Quotes in A Game of Thrones

How we cite our quotes: (Absolute Chapter, Character Name, Chapter.Paragraph)

Quote #10

"When I was a young boy, before I was cut, I traveled with a troupe of mummers through the Free Cities. They taught me that each man has a role to play, in life as well as mummery. So it is at court. The King's Justice must be fearsome, the master of coin must be frugal, the Lord Commander of the Kingsguard must be valiant... and the master of whisperers must be sly and obsequious and without scruple. A courageous informer would be as useless as a cowardly knight." (59 Eddard 15.39)

Here, Varys explains to Eddard why he can't be a heroic spy. It actually makes some sense (though we hate to admit it). But what about his larger claim? Do you agree that everyone has a role to play? Do people in this book get to choose their roles?