“…Plato (424–348 BC) and Aristotles (384–322 BC) further elaborated on the concept and Aristotle was the first to describe accurately the affections of desire, anger, fear, courage, envy, joy, hatred, and pity. Later, Galen (131–201 AD), Themison of Laodicea (1st century BC) and Aretaeus of Cappadocia (2nd century AD) as well as Arab scholars and especially Avicenna (980–1037) further elaborated on the concept of mood disorders ( Fountoulakis, 2015b ).…”