Now, as soon as we have got this human form of life, we have got different desires or we accept something as very nice. We reject something as not very good. This discriminating power is there. Even in animals there is this discriminating power. Just like a pig. A pig, if you give him halavā and if you give him stool, he would like to eat stool than the halavā. You will find it, natural. He has got natural inclination to eat stool. And a human being will be naturally inclined to take halavā. So this is called pravṛtti and nivṛtti. So the member of the Kṛṣṇa consciousness society, if you offer him tea, he will not take it. And others, if you offer tea, he will very gladly accept it. This is called pravṛtti and nivṛtti. So the pravṛtti and nivṛtti... Why a person is not accepting tea or smoking or something else, and why other person accepting the same thing? Amongst the animal also, you give something to animal. He will reject and another thing he will accept. These two things are there in every living being: accepting something and rejecting something. This is called pravṛtti and nivṛtti. So far the human form of life is concerned, there must be some pravṛtti and nivṛtti. There is that inclination, pravṛtti and nivṛtti, but they should be synchronized, systematized, what things we should accept and what things we should reject. That we must learn. Therefore we have got so many books, literature, education, what things we should accept and which things we should reject. But what is the basic principle? Why I shall accept something and reject something?
The basic principle is to go forward in our spiritual understanding. That is the basic principle. We are suffering in this material world. We may say that "We have no suffering. It is very pleasing," but actually, in every step we are suffering. Just like this is winter season. To take bath in the winter season is suffering. And in the summer season, to take bath in the summer season, it is very pleasing. So either we are suffering or we are enjoying according to different season and circumstances, but actually we are suffering. Because... Take this winter season. We do not want chilly cold. Therefore we are covering. The cause is we are suffering. Therefore we are covering. And after covering, we are feeling some pleasure. This pleasure is, for the time being, absence of suffering. That's all. Actually, we are suffering, but by some arrangement, when we stop that suffering for the time being and feel, enjoying, that is material enjoyment. Actually there is no enjoyment. Because in the winter season by covering the body we are feeling pleased but in the summer season by covering the body we feel not pleased. So this is going on. So rejecting and... Why the same dress, warm dress, does not give us pleasure in the summer season? And the same dress, in the winter season it gives us pleasure. So we do not know whether dress is pleasing or suffering. Means sometimes it is pleasing and sometime it is displeasing.