According to Vedic civilization, a pot in which wine was kept, it is impure forever. It is impure forever. You cannot use for any other purpose, it is so abominable. If you think that "This bottle contained wine. Now wine is finished. Wash it, then it becomes pure," then according to Vedic civilization wine is so impure that even the pot in which wine was kept, it will never become pure. Surā-kumbham. These examples outsider cannot understand, but it is said in the śāstra.
So we have to understand that what is the aim of life. Aim of life is go back to home, back to Godhead. Unless we understand this, our life is in darkness. Na te viduḥ svārtha-gatiṁ hi viṣṇum durāśayā ye bahir-artha-māninaḥ (SB 7.5.31). We are trying to be happy in this place of miserable condition, manufacturing so many ways of life. In the modern age they are thinking that "If we have got a very nice car and nice residential quarter and nice wife . . ." Oh, people also do not care now for wife and children. They want car, of course. (laughter) That is essential, although at any moment we can meet accident and finish. So this is not the aim of life. The aim of life is described that how to go back to home, back to Godhead. That should be. So if that is our aim of life, then we must engage our self in devotional service, or Kṛṣṇa consciousness. Then our life is successful. Otherwise we shall continue and drag the miserable condition of life, means we shall change in different ways, but it will never be successful.