Impurities in heart make it so complexed that simple spiritual truths do not appeal to the person.
Beware of anarthas! They are there to distract us from our unified purpose of serving God and thus bringing disunity among us.
Due to anarthas, a person forgets the principle & gets stuck up with details.
Our anarthas are like a layer of ice on the top of a frozen lake, covering the waters of rasa below.
If we listen hari-katha with love & devotion, it can cleanse our heart from anarthas.