Type One

The principled, idealistic type.  Ones are conscientious and ethical, with a strong sense of right and wrong.  They are teachers, crusaders, and advocates for change: always striving to improve things, but afraid of making a mistake. Well-organized, orderly, and fastidious, they try to maintain high standards, but can slip into being critical and perfectionistic.  They typically have problems with resentment and impatience. 
At Their Best: wise, discerning, realistic, and noble.  Can be morally heroic.

Copyright 2002 The Enneagram Institute