The Supreme intelligence behind all creation is the Absolute Godhead, Sri Krishna.
He who is constantly absorbed in discussing about Sri Hari is a saint. One who is constantly engaged in serving the Supreme Personality of Godhead is a saint. One who in all his endeavors tries to serve Krishna is a saint.
Those who perform severe austerities and penances, those who give away all their possessions out of charity, those who are very famous for their auspicious activity, those who are engaged in meditation and mental speculation and even those who are very expert in reciting the Vedic mantras are not able to obtain any auspicious result, although they are engaged in auspicious activities, if they do not dedicate their activities to the service of the Supreme Personality of Godhead. — Sri Caitanya Caritamrita, Madhya Lila, 22.20.
There is no question of darkness where there is light and Krishna Consciousness is the light that dispels the darkness of material sense enjoyment.
Teachings of Lord Chaitanya,