Humility; pridelessness; nonviolence; tolerance; simplicity; approaching a bona fide spiritual master; cleanliness; steadiness; self-control; renunciation of the objects of sense gratification; absence of false ego; the perception of the evil of birth, death, old age, and disease; detachment; freedom from entanglement with children, wife, home and the rest; even-mindedness amid pleasant and unpleasant events; constant and unalloyed devotion to Me; aspiring to live in a solitary place; detachment from the general mass of people; accepting the importance of self-realization; and philosophical search for the Absolute Truth - all these I declare to be knowledge, and besides this whatever there may be is ignorance.
Persons bereft of these qualities are not eligible to discuss spiritual topics. The false logicians mistake the above-mentioned qualities, which are meant to lead the conditioned soul to liberation, for mundane qualities acquired as a result of transformations of the mind, such as lust, anger, and hate. But factually, the above-mentioned qualities represent spiritual knowledge. Even if one accepts the false logicians' argument that the qualities Lord Kṛṣṇa enumerates in the Gītā as prerequisites for absolute knowledge are mental transformations, still we cannot agree that these transformations are equivalent to such qualities as lust, greed, anger, and illusion, which result from gross ignorance. One kind of mental transformation drags the soul down to depravity, whereas the other redeems the soul from doom. Both disease and medicine are products of material nature, yet one pushes a man toward the jaws of death, while the other saves him from destruction. So one must avoid becoming the laughing-stock of society by accepting the foolish theory of yatA mata, tata path - "All ways lead to the Truth" - and on this basis professing that the medicine and the disease are one and the same.
There is one quality among the twenty qualities Kṛṣṇa lists that is especially noteworthy, and that is mayi cānanya-yogena bhaktir avyabhicāriṇī: "Constant and unalloyed devotion to Me [Kṛṣṇa]." The other qualities are required to cleanse the consciousness. Once the mirror of the mind is purified and the blazing fire of material existence extinguished, constant and unalloyed devotion to Lord Kṛṣṇa begins to appear on the horizon of the heart. The great saintly spiritual master Śrīla Narottama dāsa Ṭhākura has sung, "When will my mind become purified and detached from matter? Oh, when in that purified state will I be able to see the transcendental realm of Vṛndāvana?"
It is interesting to note that once constant and unalloyed devotion to Lord Kṛṣṇa blossoms in the heart of a person, the other nineteen qualities automatically manifest in him. As mentioned in the Śrīmad-Bhāgavatam (5.18.12), yasyāsti bhaktir bhagavaty akiñcanā sarvair guṇais tatra samāsate surāḥ:
All the demigods and their exalted qualities, such as religion, knowledge and renunciation, become manifest in the body of one who has developed unalloyed devotion for the Supreme Personality of Godhead, Vāsudeva.
By patiently collecting ten, twenty, thirty rupees daily, one will someday have a million rupees. But if one comes upon a million rupees all at once, one does not have to endeavor separately to collect ten, twenty, or thirty rupees and waste valuable time. Similarly, when one develops unalloyed devotion to Lord Kṛṣṇa, all the other above-mentioned qualities automatically adorn that person without extra effort. On the other hand, one who leaves aside unalloyed devotion to Lord Kṛṣṇa and tries to cultivate the other nineteen qualities separately may temporarily receive wealth and honor, but he will become unqualified for achieving the highest goal. In the same verse of Śrīmad-Bhāgavatam mentioned above (5.8.12), Prahlāda Mahārāja says, harāv abhaktasya kuto mahad-guṇā manorathenāsati dhāvato bahiḥ:
On the other hand, a person devoid of devotional service and engaged in material activities has no good qualities. Even if he is adept at the practice of mystic yoga or the honest endeavor of maintaining his family and relatives, he must be driven by his own mental speculations and must engage in the service of the lord's external energy. How can there be any good qualities in such a man?
It is futile to make an external show of good qualities like humility and nonviolence while disrespecting the Lord's lotus feet and denouncing the process of devotional service. Such so-called good qualities may be of some material value, but ultimately they are useless and temporary. In fact, the nineteen other qualities combine to make a throne from which unalloyed devotion may rule. These qualities are various limbs of the Absolute Truth, and everything outside this absolute knowledge is nescience.
By cultivating these limbs of knowledge, one attains self-realization. In other words, one is elevated from mundane knowledge of the kṣetra to spiritual knowledge of the kṣetra-jña. We have previously established that the word kṣetra-jña implies both the living entity and the Supreme Brahman. Sometimes material nature, or prakṛti, is referred to as Brahman, the reason being that Brahman is the cause of the material nature. In one sense a cause and its effect are identical. But Lord Kṛṣṇa is the ultimate source of Brahman. The Lord impregnates Brahman in the form of the material nature with the seed of Brahman known as the jīva.