It is our duty to help our fellows. On the other hand, our duty to others should be free of emotional entanglements. The key to peace is detachment. Mind and body are separate compartments. Mental disturbance is caused by wanting and craving what is beyond our power.
External attachments cause both pleasure and pain.
The harmony of the soul is above the flux of pleasure and pain, as the harmony of nature is above all the opposites found in nature. Stoicism is the dualism of internal stability and external flux. Dependence on what comes to be and passes away brings disappointment and pain. State and explain briefly the three classes of desires discussed by Epicurus. State the two bad and the two good opinions.