Karma is intentional action; that is, a deed done deliberately through body, speech or mind is in the ethical realm. In other words, Karma is the law or moral causation. It is action and reaction in the etical realm. It is natural law that every action produces a certain effect. So, if one performs wholesome actions such as donating money to charitable organizations, one will experience happiness. On the other hand, if one performs unwholesome actions, such as killing a human being, one will experience suffering. This is the law of cause and effect at work. Karma is a law itself "According to the seed that is sown, So is the fruit you reap. The door of good will, gather good result The door of evil reaps evil result. If you plant a good seed well, Then you will enjoy the good fruits."