Srimad Bhagavatam Canto 11, Chapter 14, Text 01

SB 11.14.1

sri-uddhava uvaca
vadanti krsna sreyamsi
 bahuni brahma-vadinah
tesam vikalpa-pradhanyam
 utaho eka-mukhyata
Sri Uddhava said: My dear Krsna, the learned sages who explain Vedic literature recommend various processes for perfecting one’s life. Considering these varieties of viewpoint, my Lord, please tell me whether all these processes are equally important, or whether one of them is supreme.
In order to clearly establish the exalted position of bhakti-yoga, or pure devotional service to the Supreme Lord, Sri Uddhava requests Lord Krsna to identify the supreme among all processes of self-realization. Not all Vedic processes lead directly to the ultimate goal, pure love of God; some only gradually elevate the consciousness of the living entity. For the purpose of giving a general outline of the process of self-realization, sages may discuss the various methods of elevation. But when the time comes to ascertain the most perfect process, the secondary methods must be cleared from the path.
Srimad Bhagavatam Canto 11, Chapter 14, Text 02