India, Oct. 21 -- Deepawali - the festival of lights is widely celebrated across the globe by Hindus to commemorate the triumph of good over evil, knowledge over ignorance and hope over despair.

The festival falls on a day before the new moon in the month of Ashwin as per Hindu calendar. There are a number of rituals associated with this festival. One should know the spiritual and philosophical aspect of them and why people celebrate this occasion with such great festivity.

During Diwali, people lit oil lamps and keep them at the entrance of their homes, along with colourful strings of electric lights. But what is the spiritual significance behind lighting the lamps? In Hindu culture, light is a powerful metaphor for knowledge and consc...