The Open Society of Athens In democratic Athens of the fifth and fourth centuries BC, Greek civilization reached the apex of creativity. Perhaps alone among the Greek communities studied in this book, the classical Athenians demonstrated their ample endowment with every one of the ten characteristics that defined the ancient Greek mind-set. They were superb sailors, insatiably curious, and unusually suspicious of individuals with any kind of power. They were deeply competitive, masters of the spoken word, enjoyed laughing so much that they institutionalized comic theater, and were addicted to pleasurable pastimes. Yet the feature of the Athenian character that underlies every aspect of their collective achievement is undoubtedly their openness—to innovation, to adopting ideas from outside, and to self-expression.