We accept Vedic knowledge like that. For example, just like stool of an animal. It is stated in the Vedic literature that it is impure. If you touch stool . . . according to Vedic system, even after passing my own stool, evacuating, I have to take bath. And what to speak of others' stool. That is the system. So stool is impure. One, after touching stool, he must take bath. This is Vedic injunction.
But in another place it is said that the stool of the cow is pure, and if cow dung is applied in some impure place, it will be pure. Now, by your argument, you can say that, "The stool of an animal is impure. Why it is said in one place pure and another place impure? This is contradiction." But this is not contradiction. You practically make experiment. You take cow dung and apply anywhere, you'll find it is pure. Immediately purified.
So this is Vedic injunction. They are perfect knowledge. We . . . instead of wasting time arguing and putting forward false prestige, if you simply accept the perfect knowledge, as they are stated in the Vedic literature, then we get perfect knowledge and our life is success. Instead of making experiment on the body to find out where is the soul.