And all perturbation is itself, according to Zeno, a movement of the mind, or superfluous inclination, which is irrational, and contrary to nature. Moreover, of the superior class of perturbations, as Hecaton says, in the second book of his treatise on the Passions, and as Zeno also says in his work on the Passions, there are four kinds, grief, fear, desire, and pleasure. And they consider that these perturbations are judgments, as Chrysippus contends in his work on the Passions; for covetousness is an opinion that money is a beautiful object, and in like manner drunkenness and intemperance, and other things of the sort, are judgments. And grief they define to be an irrational contraction of the mind... But fear is the expectation of evil... Again, desire is an irrational appetite... Again, pleasure is an irrational elation of the mind over something which appears to be desirable... There are also three good dispositions of the mind; joy, caution, and will. And joy they say is the opposite of pleasure, since it is a rational elation of the mind; so caution is the opposite of fear, being a rational avoidance of anything, for the wise man will never be afraid, but he will act with caution; and will, they define as the opposite of desire, since it is a rational wish. — Diogenes Laertius, *Lives*, VII.63 (tr. C. D. Yonge, 1853) **Surface Gloss:** The Stoics define the four root passions (grief, fear, desire, pleasure) not as animal instincts, but as false value-judgments; the sage replaces them with three rational dispositions (*eupatheiai*): joy, caution, and will—leaving no rational counterpart for grief. Use the **Stoic 4-to-3 Conversion Grid** whenever an emotion hijacks your decision-making: 1. **Unpack the hidden judgment:** Every passion is a sentence you just signed (e.g., Anger = *"This injury is an absolute evil and vengeance is my duty"*). Rewrite the sentence with accurate value-tags. 2. **Swap the state:** Convert **Fear** (panic over external loss) into **Caution** (rational risk-avoidance); **Craving** into **Will** (clean, unattached intent); **Hype/Pleasure** into **Joy**; and delete **Grief/Self-Pity** entirely by refusing to classify external setbacks as existential evils.
— In our words · Source: Lives of Eminent Philosophers (Diogenes Laertius)