Frank and Ollie, as they were affectionately known by their protégés, taught that the thoughts and emotions behind the character were primary to the creation of every scene. Out of all the Nine Old Men, Frank and Ollie were the most known for their mentor/apprentice relationships, and the sharing of their knowledge about creating characters, most notably as transcribed through "". This book relays the 12 basic principles of animation, and is informally considered to be the 'animation bible' for any student of animation.