There various type of changes that occurred during Hellenistic age. It brought about new political and philosophical concepts. Epicureanism held that people could achieve happiness only by withdrawing from public life and, through the exercise of reason, freeing themselves from all sources of anxiety, including a belief in gods. Epicureanism also opened philosophical activity to all despite gender or social condition. Stoicism did so as well through its idea of a world society bound by a shared search for harmony with the Logos. Everyone could achieve this harmony by their passions through reason. Stoicism also encouraged participation in public life to foster harmony throughout world society. Skepticism denied that there is one true path to happiness. In its most sophisticated form, it insisted on the limits of reason, encouraging adherents to base morality not on fixed principle but on practical experience. The most radical of Hellenistic philosophies, Cynicism tried to free people to follow their own natures by denying all forms of authority and promoting ascetic self-discipline. By emphasizing personal fulfillment, Hellenistic philosophy did some of the work of religion, thus preparing the way for Christianity.
Politically, Hellenistic civilization was defined by its Greek-speaking cities. It became diverse as the