It is undeniable that notions o f sin and guilt play a significant role in human life and human thought. That is why we have chosen sin and guilt as the theme o f this issue o f Jnanadeepa. In order to gain a broader understanding o f sin and guilt we shall discuss them from interdisciplinary perspectives. We shall not only examine the meaning sin and guilt have in different traditions and disciplines but also investigate the role they play in different world­ views. There is an article in this issue which seeks to develop psychological perspectives on sin and guilt. For a long time most psychologists were reluctant to explore sin since it seemed to be closely related to religion and theology. In recent years a number o f psychologists have been showing some interest in the study of sin. Guilt is a favourite theme in psychoanalysis. It is true that an exaggerated sense o f guilt can lead to depression. And yet the lack o f a sense o f guilt can result in the formation o f an antisocial personality. But a healthy sense o f guilt has many pro-social benefits.