Epicurus founded his physics based upon Democritus but discovered that Democritus had no distinguishing ethical doctrine and, therefore, had to formulate his own objective ethics.
Epicurus went on to formulate a self-centered moral philosophy in which the individual person is the realm of moral enterprise.
He taught that atomic motion is not solely the result of past motion and weight.
Although subject to their past motion and weight, occasionally and randomly atoms swerve to the side resulting in atomic collisions.
Epicurus' Identity Theory of Mind (or Soul) holds that the mind proper resides in the chest and is primarily responsible for sensation and thought.
Other soul atoms are spread throughout the remainder of the body permitting the mind to communicate with it.He states that the most preeminent negative mental state is the fear of irrational dangers such as death.Death is nothing to us while we are alive and when death occurs we no longer exist.Epicurus (341-270 BC), a major philosopher of the Hellenistic period, largely relied upon Democritus for his materialistic and atomistic theory of nature.However, he does modify Democritus' metaphysics because of its skeptical and deterministic implications.His goal was to liberate mankind from the fear of God and from the fear of death.Epicurus taught that fear of the gods and fear of death can be eliminated by right doctrine.According to this accidentalist atomism, worlds spontaneously emerge from the interaction of innumerable small particles.Epicurus attempted to explain all natural phenomena in atomistic terms through a naturalistic account of evolution from formation of the world to the emergence of human societies.He wanted to eliminate the idea that God created everything and that human behavior should be based on obedience to God-given principles.He also wanted to dispense with transcendent entities such as Platonic Forms existing in themselves in some supernatural world.