Catura means very intelligent. Only the first-class intelligent men in the human society, they can take to Kṛṣṇa consciousness, not even second class, what to speak of the third class?
So here it is condemned that naiṣkarmyam apy acyuta-bhāva-varjitaṁ na śobhate: "It does not look very well. It is not first-class philosophy." Na śobhate. So kutaḥ punaḥ śaśvad abhadram īśvare na cārpitaṁ karma yad apy akāraṇam: "Then what to speak of those who are karmīs?" The philosopher class, they are better than the karmīs because they are searching after something. They are making research by knowledge. But the karmīs, they are simply satisfied just like animals. They have been described in the Bhagavad-gītā as mūḍha. Mūḍha. Na māṁ prapadyante mūḍhāḥ (BG 7.15). Mūḍha means ass. The karmīs have been described as ass, whole day working, a beast of burden. Simply, unnecessarily, they have piled up on their back so many work. They have no more interest, nothing, no more interest, neither philosophy, nor Kṛṣṇa, nor... Simply work hard and get some money and enjoy in eating, sleeping and mating, eat, drink, be merry and enjoy. That is their... That is... They are called karmīs. So Nārada says that "Even great philosophers who are trying to elevate themselves in the self-realization platform, if that sort of philosophy is acyuta-bhāva-varjitam, without Kṛṣṇa consciousness, that does not look well. That is not first-class philosophy." Philosophy should be to search out Kṛṣṇa. That is philosophy. As it is stated in the Bhagavad-gītā, vedaiś ca sarvair aham eva vedyaḥ (BG 15.15). What is the Vedic knowledge searching after? Kṛṣṇa says, "Searching Me." Aham. Aham eva vedyaḥ: "I am the ultimate goal to understand." In another place Kṛṣṇa says in the Bhagavad-gītā, bahūnāṁ janmanām ante jñānavān māṁ prapadyate: (BG 7.19) "Those who are actually philosophers, actually wise and attained wisdom, and after many, many births: research work..." Research work is very good. But the end of research work is Kṛṣṇa. Therefore after many, many births, if one is actually wise and attained wisdom, then he finds Kṛṣṇa. Vāsudevaḥ sarvam iti: (BG 7.19) "He finds that Vāsudeva, Kṛṣṇa, is everything." But sa mahātmā sudurlabhaḥ: "But such kind of great soul is very rare." These are the statement of Bhagavad-gītā.
So the karmīs, they are mūḍhas. They do not... They are not wise. Unless one is wise, he cannot surrender unto Kṛṣṇa. Therefore Caitanya-caritāmṛta says, kṛṣṇa yei bhaje sei baḍa catura. Catura means very intelligent. Only the first-class intelligent men in the human society, they can take to Kṛṣṇa consciousness, not even second class, what to speak of the third class? The third-class men are karmīs, the second-class men are philosophers, and the first-class men are devotees.