The sufferings of human society cannot be counteracted by material plans. The only way suffering can be mitigated is by Krsna consciousness. When one takes to Krsna consciousness and engages himself in the devotional service of the Lord — beginning with chanting and hearing the glories of the Lord — the cleansing of the heart begins. When the heart is actually cleansed, one can clearly see the Lord sitting there without any disturbance. In Srimad-Bhagavatam (9.4.68) the Lord confirms that He sits within the heart of the pure devotee: sadhavo hrdayam mahyam sadhunam hrdayam tv aham.

From Srila Prabhupada’s purport to Cc Madhya 12.135