Foolish persons do not know how risky life is here if one does not follow the instructions of Krsna. The Krsna consciousness movement, therefore, has been started so that by practicing Krsna consciousness one can avoid the risky life of this material existence. There is no question of accepting or not accepting Krsna consciousness. It is not optional; it is compulsory. If we do not take to Krsna consciousness, our life is very risky. Everything is explained in Bhagavad-gita. Therefore, to learn how to become free from the miserable condition of material existence, Bhagavad-gita As It Is is the preliminary study. Then, if one understands Bhagavad-gita, one can proceed to Srimad-Bhagavatam, and if one advances further, one may study Caitanya-caritamrta. We are therefore presenting these invaluable books to the whole world so that people may study them and be happy, being delivered from miserable conditional life.
Srila Prabhupada; SB 10.8.49 purport