From a metaphysical standpoint Nibbana is deliverance from suffering. From a psychological standpoint Nibbana is the eradication of egoism. From an e… - Narada Maha Thera

Kamma, literally, means action; but, in its ultimate sense, it means the meritorious and demeritorious volition (Kusala Akusala Cetana). Kamma constitutes both good and evil. Good gets good. Evil gets evil. Like attracts like. This is the law of Kamma. As some Westerners prefer to say Kamma is "action-influence." We reap what we have sown. What we sow we reap somewhere or some when. In one sense we are the result of what we were; we will be the result of what we are. In another sense, we are not totally the result of what we were and we will not absolutely be the result of what we are. For instance, a criminal today may be a saint tomorrow. Buddhism attributes this variation to Kamma, but it does not assert that everything is due to Kamma. If everything were due to Kamma, a man must ever be bad, for it is his Kamma to be bad. One need not consult a physician to be cured of a disease, for if one's Kamma is such one will be cured. … Kamma is, therefore, only one of the five orders that prevail in the universe. It is a law in itself, but it does not thereby follow that there should be a law-giver. Ordinary laws of nature, like gravitation, need no law-giver. It operates in its own field without the intervention of an external independent ruling agency. Nobody, for instance, has decreed that fire should burn. Nobody has commanded that water should seek its own level. No scientist has ordered that water should consist of H2O, and that coldness should be one of its properties. These are their intrinsic characteristics. Kamma is neither fate nor predestination imposed upon us by some mysterious unknown power to which we must helplessly submit ourselves. It is one's own doing reacting on oneself, and so one has the possibility to divert the course of Kamma to some extent. How far one diverts it depends on oneself. … It should be stated that Kamma has both the continuative and the retributive principle. Inherent in Kamma is the potentiality of producing its due effect. The cause produces the effect; the effect explains the cause. Seed produces the fruit; the fruit explains the seed as both are inter-related. Even so Kamma and its effect are inter-related; "the effect already blooms in the cause."

It should be mentioned that any external supernatural agency plays no part whatever in the moulding of the character of a Buddhist. In Buddhism there is no one to reward or punish. Pain or happiness are the inevitable results of one's actions. The question of incurring the pleasure or displeasure of a God does not enter the mind of a Buddhist. Neither hope of reward nor fear of punishment acts as an incentive to him to do good or to refrain from evil. A Buddhist is aware of future consequences, but he refrains from evil because it retards, does good because it aids progress to Enlightenment (Bodhi). There are also some who do good because it is good, refrain from evil because it is bad.

The Buddha was a human being. As a man He was born, as a man He lived, and as a man His life came to an end. Though a human being, He became an extraordinary man (Acchariya Manussa), but He never arrogated to Himself divinity. The Buddha laid stress on this important point and left no room whatever for anyone to fall into the error of thinking that He was an immortal divine being. Fortunately there is no deification in the case of the Buddha. It should, however, be remarked that there was no Teacher, "ever so godless as the Buddha, yet none so god-like." The Buddha is neither an incarnation of the Hindu God Vishnu, as is believed by some, nor is He a savior who freely saves others by His personal salvation. The Buddha exhorts His disciples to depend on themselves for their deliverance, for both purity and defilement depend on oneself. Clarifying His relationship with His followers and emphasizing the importance of self-reliance and individual striving, the Buddha plainly states: "You should exert yourselves, the Tathagatas are only teachers." The Buddhas point out the path, and it is left for us to follow that path to obtain our purification.