Buddha believed in the theory of actions or Karma. He held that one of the chief features of the universal law of Dharma is as a man acts so shall he be. We get the reward of our past actions in the present life and for our present actions we get rewarded in the future. Buddha had no faith in personal God. A belief in the supernatural was a weakness. He neither admitted nor denied the existence of God. However he believed that a supreme force controls the whole world. To it he gave the name of Dharma. Buddha's conception of religion was purely ethical. He did not care for worship or rituals. He put all his emphasis on conduct.
He was against useless sacrifices and rituals. According to Buddha, the highest goal of man's life is to achieve Nirvana. According to him Nirvana meant when there is no craving, no selfishness and no hatred or malice for others. It can be achieved by following the eight fold path.