Sentence:  Why is it that all those who have become eminent in philosophy or politics or poetry or the arts are clearly of an <WSD>atrabilious</WSD> temperament, and some of them to such an extent as to be affected by diseases caused by black bile, as is said to have happened to Heracles among the heroes? For he appears to have been of this nature, wherefore epileptic afflictions were called by the ancients 'the sacred disease' after him. That his temperament was <WSD>atrabilious</WSD> is shown by the fury which he displayed towards his children and the eruption of sores which took place on Mount Oeta; for this often occurs as the result of black bile. 
Meaning of the word marked with <WSD> tags:  Ill-natured; malevolent; cantankerous.