Premanand Maharaj Ji
What is moksha and how is it attained?
Why we feel bound
The root of bondage is avidya (ignorance of our true nature): we accept ourselves as the body, and so we are bound. Moksha is this mistake coming to an end.
The main cause is avidya. Ignorance, moh and tam are its synonyms. Ignorance spread over us and we accepted ourselves as the body; through this acceptance we came into bondage.