Quotes from Kenneth W. Estes

Rudeness, abruptness, gory tales of blood and thunder, and coarse language usually show up the greenhorn or counterfeit, and certainly the ill-bred. "The bravest are the tenderest; the gentlest are the daring.

Whoever gossips to you will gossip of you"; "It is easier to be critical than correct"- avoid criticism about other officers, and never vent destructive criticism of your service, your unit, or your superiors.