Śrī Caitanya Caritamrta · Text Madhya 24.93
অজাগলস্তন-ন্যায় অন্য সাধন ।
অতএব হরি ভজে বুদ্ধিমান্ জন ॥ ৯৩ ॥
ajā-gala-stana-nyāya anya sādhana
ataeva hari bhaje buddhimān jana
“With the exception of devotional service, all the methods of self-realization are like the nipples on the neck of a goat. Therefore an intelligent person adopts only devotional service, giving up all other processes of self-realization.
Read Śrīla Prabhupāda's purport on Vedabase.io