Apatheia
Fleeting- Référence externe : https://en.wikipedia.org/wiki/Apatheia
state of mind in which one is not disturbed by the passions. It might better be translated by the word equanimity than the word indifference. The meaning of the word apatheia is quite different from that of the modern English apathy, which has a distinctly negative connotation. According to the Stoics, apatheia was the quality that characterized the sage.