Hellenistic Civilisation  

"Man, as a political animal, a fraction of the polis or self-governing city-state, had ended with Aristotle; with Alexander begins man as an individual. This individual needed to consider both the regulation of his own life and also his relations with other individuals who with him composed the ‘inhabited world’; to meet the former need there arose the philosophies of conduct, to meet the latter certain new ideas of human brotherhood. These originated on the day—one of the critical moments of history—when, at a banquet at Opis, Alexander prayed for a union of hearts (homonoia) among all peoples and a joint commonwealth of Macedonians and Persians."--Hellenistic Civilisation (1927) by William Woodthorpe Tarn