Krsna says, yat taj jnanam. Ksetra-ksetrajnayor yat taj-jnanam matam mama. Krsna is giving, that one should know what he is and one should know what is his body, then he is in knowledge. The matter cannot understand this. The dogs, cats, cannot understand this. But a human being can understand this. Bhagavad-gita is meant for the human being, not for the cats and dogs. Therefore, the human society should take care of this knowledge. Then his life will be successful.
Lecture on Bhagavad-gita 13.3, Paris, 11 August, 1973