Janma karma me divyaṁ yo jānāti tattvataḥ (BG 4.9). Simply try to understand Kṛṣṇa, how He appears, how He disappears, what is His constitutional position, what is my constitutional position, what is the relationship with Kṛṣṇa, how to live. Everything. Simply if you understand these things, Kṛṣṇa says, janma karma me divyaṁ yo jānāti tattvataḥ . . . tattvataḥ means reality, scientifically; not by whims or sentiments or fanaticism. No. Everything Kṛṣṇa consciousness is everything scientific, solid scientific. It is not bogus. It is not imagination.
So tattvataḥ. That is called tattvataḥ: in fact, in reality, in truth. If one understands Kṛṣṇa in truth, then the result is tyaktvā deham. By giving up this body . . . we have to give up this body, willingly or unwillingly. A day will come when you have to submit to the laws of nature and give up this body. Even your president, Mr. Kennedy, he was going in procession, but when nature's law demanded that, "Now you submit your body here and change for another body," he had to. There was no question, "Oh, I am president, I am Mr. Kennedy. I cannot do this." No. You have to do it. Force. That you do not understand, how this nature's force is working on us.
So this is the business of developed consciousness, human consciousness. Otherwise, consciousness is there in the dog, in the cats, in the worms, in the trees, in the birds, in the beasts. Consciousness is there. But are we meant for living in that consciousness, cats' and dogs' consciousness? No.