The Apprehensive Impression
The Stoics' gold standard of perception: an impression so vivid and faithful to its object that it could only come from something real, and that all but forces you to assent.
How can we ever be sure of anything? The Stoics answered with the 'apprehensive impression' (phantasia kataleptike) — a perception that stamps its object on the mind so accurately that no false impression could ever counterfeit it. Developed by Zeno of Citium and, above all, Chrysippus in the 3rd century BCE, this self-certifying grasp became the bedrock of knowledge. Academic Skeptics like Carneades attacked the idea relentlessly, and the fight over whether any impression can truly guarantee certainty became one of antiquity's great epistemological battles, reported at length by Cicero and Sextus Empiricus.
How it traveled
- AcademicaFormiae · -45explains
- LucullusFormiae · -43explains
- de Finibus Bonorum et MalorumFormiae · -43explains
- DiscoursesNicopolis · 108explains
- Adversus MathematicosAlexandria · 190explains
- Pyrrhoniae HypotyposesAlexandria · 210explains
- Vitae philosophorum— · 240explains
- Fragmenta Logica et PhysicaAthensexplains
- Fragmenta MoraliaAthensexplains
- Stromata—explains
- Praeparatio Evangelica—explains
- De optima doctrina [attributed]Romeexplains
- FragmentaApameaexplains
- De optima secta ad Thrasybulum—explains
- Suidae lexicon—explains
Key passages(20)
Fragmenta Logica et Physica · Chrysippus
Fragmenta Logica et Physica · Chrysippus
Fragmenta Logica et Physica · Chrysippus
Fragmenta Logica et Physica · Chrysippus
Fragmenta Logica et Physica · Chrysippus
Fragmenta Logica et Physica · Chrysippus
Fragmenta Logica et Physica · Chrysippus
Fragmenta Logica et Physica · Chrysippus
Vitae philosophorum · Diogenes Laertius
Vitae philosophorum · Diogenes Laertius
Adversus Mathematicos · Sextus Empiricus