As described in previous verses, many so-called students of spiritual understanding follow the ten different methods known as mauna-vrata-sruta-tapo-dhyayana-sva-dharma-vyakhya-raho japa-samadhayah. These may be very attractive, but by following such methods, one cannot actually understand the real cause and effect and the original cause of everything (janmady asya yatah [SB 1.1.1]). The original source of everything is the Supreme Personality of Godhead Himself (sarva-karana-karanam [Bs. 5.1]). This original source of everything is Krsna, the supreme ruler. Isvarah paramah krsnah sac-cid-ananda-vigrahah [Bs. 5.1]. He has His eternal spiritual form. Indeed, He is the root of everything (bijam mam sarva-bhutanam). Whatever manifestations exist, their cause is the Supreme Personality of Godhead. This cannot be understood by so-called silence or by any other hodgepodge method. The supreme cause can be understood only by devotional service, as stated in Bhagavad-gita (bhaktya mam abhijanati [Bg. 18.55]). Elsewhere in Srimad-Bhagavatam (11.14.21), the Supreme Godhead personally says, bhaktyaham ekaya grahyah: one can understand the original cause of all causes, the Supreme Person, only by devotional service, not by show-bottle exhibitionism.