Lord Chaitanya Mahaprabhu says:

I will open the way for the religion of this age, the collective song of the holy name of the Lord. I will thus give the world to taste the four forms of sweet exchanges which are attached to the service of love and devotion, and thereby make it dance with ecstasy.

Accepting the role of a devotee, I will teach by My example the practice of devotional service.

I brought the remedy to the perpetual sleep in which all beings are immersed. Please accept the Holy Name of the Lord, the maha-mantra [the great mantra, the spiritual sound vibration] Hare Krishna, and wake up.

Glory to the chanting of the Holy Names of Krishna. From our hearts he sweeps away all unclean things accumulated over the ages, he extinguishes the burning fire of conditioned existence, with its endless births and deaths. The sankirtana movement [sankirtana: any activity which aims to spread the glories of God for the benefit of all beings. Its main manifestation is to hum in public the song of the Holy Names of the Lord, always accompanied by dances and distribution of consecrated food] spreads on all human beings the greatest blessing, diffusing its rays like the benevolent moon. Weapon of spiritual knowledge, it makes the ocean of absolute bliss grow and it allows us to fully savor the nectar for which we ceaselessly yearn.

Here are the eight prayers left to us by Lord Chaitanya, his only writings.

(It's up to us to make them ours.)

Glory to the chanting of the Holy Names of Krishna. From our hearts he sweeps away all unclean things that have accumulated over the ages. He puts out the burning fire of conditioned existence, with its endless births and deaths. The movement of the sankirtana sheds the greatest blessing upon all men, shedding its rays like the benevolent moon. Soul of spiritual knowledge, it grows the ocean of absolute bliss, and allows us to fully savor the nectar after which we ceaselessly yearn.

Your Holy Name can alone, O Lord, fill the soul with all the graces. Now, sublime Names you possess in infinity, such as Krishna and Govinda, which you have invested with all your spiritual powers; to sing them, no strict rule. In your infinite mercy, O Lord, you allow that one easily approaches you by the song of your Holy Names, but in my misfortune, I am not capable of any attraction for them.