Those miscreants who are grossly foolish, lowest among mankind, whose knowledge is stolen by illusion, and who partake of the atheistic nature of demons, do not surrender unto Me. Thus karmis who engage in sinful acts and who do not know the true objective of life are called mudhas, asses. Vimarsana, however, is also explained in Bhagavad-gita (15.15), where Krsna says, vedais ca sarvair aham eva vedyah: the purpose of Vedic study is to understand the Supreme Personality of Godhead. If one studies Vedanta but merely advances somewhat in speculative knowledge and does not understand the Supreme Lord, one remains the same mudha. As stated in Bhagavad-gita (7.19), one attains real knowledge when he understands Krsna and surrenders unto Him (bahunam janmanam ante jnanavan mam prapadyate). To become learned and free from material contamination, therefore, one should try to understand Krsna, for thus one is immediately liberated from all pious and impious activities and their reactions.