a scale which shows the emotional tones of a person. These, ranged from the highest to the lowest, are, in part, serenity, enthusiasm (as we proceed downward), conservatism, boredom, antagonism, anger, covert hostility, fear, grief, apathy. (There are additional tone levels than these in the Expanded Tone Scale, and for further information see the book Scientology 0-8: The Book of Basics.) —Scientology 8-80 Glossary Final approval 13.2.90