Srimad-Bhagavatam 11.5.36
kalim sabhajayanty aryaguna jnah sara-bhaginahyatra sankirtanenaivasarva-svartho 'bhilabhyate
"Those who are actually advanced in knowledge are able to appreciate the essential value of this Age of Kali. Such enlightened persons worship Kali-yuga because in this fallen age all perfection of life can easily be achieved by the performance of sankirtana."
Srimad-Bhagavatam 12.3.51
kaler dosa-nidhe rajan asti hy eko mahan gunahkirtanad eva krsnasya mukta-sangah param vrajet
"My dear king, although Kali-yuga is full of faults, there is still one good quality about this age: simply by chanting the Hare Krsna maha-mantra, one can become free from material bondage and be promoted to the transcendental kingdom."
