- Euthymia (philosophy)
Euthymia (Greek:ευθυμία, "gladness, good mood, serenity") was used in
ancient philosophy byDemocritus as one of the root aspects of human life's goal as a necessary part of humanWeltanschauung .ee also
* [http://plato.stanford.edu/entries/democritus/#7 Democritus Ethics]
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