In Srila Prabhupada’s own words -
“This chanting of the Hare Krishna Mahamantra is directly enacted from the spiritual platform, and thus this sound vibration surpasses all lower status of consciousness—namely sensual, mental, and intellectual. Therefore, there is no need to understand the language of the mantra, any mental speculation, or any intellectual adjustment for chanting this maha-mantra. It is from the spiritual platform, so anyone can take part in the chanting without any previous qualification and dance in ecstasy. We have seen this practically. Even a child can take part in the chanting, or even a dog can take part in it.”