One example of a famous quote about cowboys is, "It is easier to get an actor to be a cowboy than to get a cowboy to be an actor," by John Ford. Another example is, "There never was a horse that couldn't be rode; Never was a cowboy who couldn't be throwed," which is an anonymous cowboy saying.
The quote by John Ford implies that it's not likely for a cowboy to pretend to be something or someone else and that cowboys stay true to who they are. John Ford was an American film director in the 20th century. He is well known for the movies "Stagecoach," The Searchers" and "The Man Who Shot Liberty Valance." Ford holds the record with four Academy Awards for Best Director as of 2015. He directed over 140 films in his lifetime, but many of his silent films are lost.
The anonymous quote is about how any horse can be ridden, but the rider may not always stay on the horse. It also implies that even the best of cowboys are susceptible to being thrown off a horse. Another example of some cowboy advice is, "Never approach a bull from the front, a horse from the rear, or a fool from any direction."