People in this Age of Kali, are enamored by the external energy of Krishna, and they wrongly think that by advancement of material science every man will be happy.
Speculative knowledge alone, without devotional service, is not able to give liberation. On the other hand, even without knowldege one can obtain liberation if one engages in the Lord’s devotional service. — Sri Chaitanya Caritamrita, Madhya Lila, 22.21.
The spiritual master is the mercy representative of the Lord.
Srimad Bhagavatam 1.7.22,
We are the only hope for the human society to receive real knowledge, and our books are the only real thing. It may take some time, but one day all this rubbish literature, rubbish philosophy, rubbish culture will be replaced. TNOBD Pg 169 Chap 04.