Similarly, in this world they have invented so many things—philanthropism, altruism, nationalism, this "ism," that "ism," but without Kṛṣṇa. It is the same position. Without Kṛṣṇa consciousness he's going to hell, however moral he may be, however pious he may be, so-called. If he does not know Kṛṣṇa, it has no meaning. Therefore, the first condition was that we are interested to hear about Mahārāja Parīkṣit's punishing the Kali provided it helps us to advance in Kṛṣṇa consciousness. Otherwise we have no interest. This should be the principle of devotees. We can take part in everything—politics, sociology or philanthropism, altruism, there are so many things they have discovered—provided by taking part in that department of activities we advance our Kṛṣṇa consciousness. Otherwise reject. Don't take part. You'll be implicated. There, that, that philosophy, technique: dhari' mācha nā choṅya (?) pāni, that we should fish, but don't touch the water. If on the plea of fishing, you become fall down in the water and you are gone, washed away, then what is this?
So sometimes we say that you take part in politics. Our business is not to take part in politics for acquiring big post like president or secretary or attorney general. What you will do that? We have no meaning for this post. Because for a devotee what are these posts? Even the post of Lord Brahmā or Indra, the heavenly king, it has no meaning.
(Lecture on Srimad Bhagavatam--1:16:5--Los Angeles--2nd. January, 1974).

Vidura, as a saint and as the duty-bound affectionate youngest brother of Dhṛtarāṣṭra, wanted to awaken Dhṛtarāṣṭra from his slumber of disease and old age. Vidura therefore sarcastically addressed Dhṛtarāṣṭra as the "King," which he was actually not. Everyone is the servant of eternal time, and therefore no one can be king in this material world. King means the person who can order. The celebrated English king wanted to order time and tide, but the time and tide refused to obey his order. Therefore one is a false king in the material world, and Dhṛtarāṣṭra was particularly reminded of this false position and of the factual fearful happenings which had already approached him at that time. Vidura asked him to get out immediately, if he wanted to be saved from the fearful situation which was approaching him fast. He did not ask Mahārāja Yudhiṣṭhira in that way because he knew that a king like Mahārāja Yudhiṣṭhira is aware of all the fearful situations of this flimsy world and would take care of himself, in due course, even though Vidura might not be present at that time.
(Srimad Bhagavatam--1:13:18--purport).