Apatheia definition
Apatheia means literally “lacking the patheiai” and is taken to be the state of perfect psychic tranquil- ity attained by the sage through her freedom from false judgments. In other words, because the patheiai are false judgments for the Stoics, the sage – who never makes false judgments – is not subject to the patheiai. She is thus in a state of apatheia, which, for the Old Stoa, entailed emotional tranquility (i.e. tranquil emotions, as opposed to a complete absence of emotions) as a corollary.