Ataraxia (ἀταραξία "tranquility") is a Greek term used by Pyrrho and Epicurus for a lucid state of robust tranquility, characterized by ongoing freedom from distress and worry. 
For the Epicureans 
For the Epicureans, ataraxia was synonymous with the only true happiness possible for a person. It signifies the state of robust tranquility that derives from eschewing faith in an afterlife, not fearing the gods because they are distant and unconcerned with us, avoiding politics and vexatious people, surrounding oneself with trustworthy and affectionate friends and, most importantly, being an affectionate, virtuous person, worthy of trust.
For the Pyrrhonians 
For the Pyrrhonians, given that neither the sense impressions nor the intellect, nor both combined, is a sufficient means of knowing and conveying truth, one suspends judgement on dogmatic beliefs or anything non-evident.
For the Stoics 
The Stoics, too, sought mental tranquility, and saw ataraxia as something to be highly desired and often made use of the term, but for them the analogous state, attained by the Stoic sage, was apatheia or absence of passion.
See also 
- ^ "Dictionary.com". Retrieved August 2, 2012.
- ^ Steven K. Strange, (2004), The Stoics on the Voluntariness of Passion in Stoicism: Traditions and Transformations, page 37. Cambridge University Press.
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