Knowing Only What You’ve Heard

“One must give aural reception to any knowledge one wants to receive, either material or spiritual. Therefore shrotram is very important. The Vedic knowledge is called shruti; knowledge has to be received by hearing. By hearing only can we have access to either material or spiritual enjoyment.” (Shrila Prabhupada, Shrimad Bhagavatam, 3.26.32 Purport)