A woman's face is as attractive and beautiful as a blossoming lotus flower during autumn. Her words are very sweet, and they give pleasure to the ear, but if we study a woman's heart, we can understand it to be extremely sharp, like the blade of a razor. In these circumstances, who could understand the dealings of a woman?
Woman is now depicted very well from the materialistic point of view by Kaśyapa Muni. Women are generally known as the fair sex, and especially in youth, at the age of sixteen or seventeen, women are very attractive to men. Therefore a woman's face is compared to a blooming lotus flower in autumn. Just as a lotus is extremely beautiful in autumn, a woman at the threshold of youthful beauty is extremely attractive. In Sanskrit a woman's voice is called nārī-svara because women generally sing and their singing is very attractive. At the present moment, cinema artists, especially female singers, are especially welcome. Some of them earn fabulous amounts of money simply by singing. Therefore, as taught by Śrī Caitanya Mahāprabhu, a woman's singing is dangerous because it can make a sannyāsī fall a victim to the woman. Sannyāsa means giving up the company of women, but if a sannyāsī hears the voice of a woman and sees her beautiful face, he certainly becomes attracted and is sure to fall down. There have been many examples. Even the great sage Viśvāmitra fell a victim to Menakā. Therefore a person desiring to advance in spiritual consciousness must be especially careful not to see a woman's face or hear a woman's voice. To see a woman's face and appreciate its beauty or to hear a woman's voice and appreciate her singing as very nice is a subtle falldown for a brahmacārī or sannyāsī. Thus the description of a woman's features by Kaśyapa Muni is very instructive.
When a woman's bodily features are attractive, when her face is beautiful and when her voice is sweet, she is naturally a trap for a man. The śāstras advise that when such a woman comes to serve a man, she should be considered to be like a dark well covered by grass. In the fields there are many such wells, and a man who does not know about them drops through the grass and falls down. Thus there are many such instructions. Since the attraction of the material world is based on attraction for women, Kaśyapa Muni thought, "Under the circumstances, who can understand the heart of a woman?" Cāṇakya Paṇḍita has also advised, viśvāso naiva kartavyaḥ strīṣu rāja-kuleṣu ca: "There are two persons one should not trust—a politician and a woman." These, of course, are authoritative śāstric injunctions, and we should therefore be very careful in our dealings with women.
Sometimes our Kṛṣṇa consciousness movement is criticized for mingling men and women, but Kṛṣṇa consciousness is meant for anyone. Whether one is a man or woman does not matter. Lord Kṛṣṇa personally says, striyo vaiśyās tathā śūdrās te 'pi yānti parāṁ gatim: whether one is a woman, śūdra or vaiśya, not to speak of being a brāhmaṇa or kṣatriya, everyone is fit to return home, back to Godhead, if he strictly follows the instructions of the spiritual master and śāstra. We therefore request all the members of the Kṛṣṇa consciousness movement—both men and women—not to be attracted by bodily features but only to be attracted by Kṛṣṇa. Then everything will be all right. Otherwise there will be danger.
(Srimad Bhavavatam--6:18:41--translation and purport).

In the Laghu-bhāgavatāmṛta Śrīla Rūpa Gosvāmī has explained Kṛṣṇa's being both Kṣīrodakaśāyī Viṣṇu and Nārāyaṇa in the spiritual sky and expanding in the quadruple forms known as Vāsudeva, Saṅkarṣaṇa, Pradyumna and Aniruddha. He has refuted the idea that Kṛṣṇa is an incarnation of Nārāyaṇa. Some devotees think that Nārāyaṇa is the original Personality of Godhead and that Kṛṣṇa is an incarnation. Even Śaṅkarācārya, in his commentary on the Bhagavad-gītā, has accepted Nārāyaṇa as the transcendental Personality of Godhead who appeared as Kṛṣṇa, the son of Devakī and Vasudeva. Therefore this matter may be difficult to understand. But the Gauḍīya Vaiṣṇava-sampradāya, headed by Rūpa Gosvāmī, has established the principle of the Bhagavad-gītā that everything emanates from Kṛṣṇa, who says in the Bhagavad-gītā, ahaṁ sarvasya prabhavaḥ: (B.G.10:8) "I am the original source of everything." "Everything" includes Nārāyaṇa. Therefore Rūpa Gosvāmī, in his Laghu-bhāgavatāmṛta, has established that Kṛṣṇa, not Nārāyaṇa, is the original Personality of Godhead.
In this connection he has quoted a verse from Śrīmad-Bhāgavatam (3.2.15) that states:
sva-śānta-rūpeṣv itaraiḥ svarūpair
abhyardyamāneṣv anukampitātmā
parāvareśo mahad-aṁśa-yukto
hy ajo ’pi jāto bhagavān yathāgniḥ
"When pure devotees of the Lord like Vasudeva are greatly disturbed by dangerous demons like Kaṁsa, Lord Kṛṣṇa joins with all His pastime expansions, such as the Lord of Vaikuṇṭha, and, although unborn, becomes manifest, just as fire becomes manifest by the friction of araṇi wood." Araṇi wood is used to ignite a sacrificial fire without matches or any other flame. Just as fire appears from araṇi wood, the Supreme Lord appears when there is friction between devotees and nondevotees. When Kṛṣṇa appears, He appears in full, including within Himself all His expansions, such as Nārāyaṇa, Vāsudeva, Saṅkarṣaṇa, Aniruddha and Pradyumna. Kṛṣṇa is always integrated with His other incarnations, like Nṛsiṁhadeva, Varāha, Vāmana, Nara-Nārāyaṇa, Hayagrīva and Ajita. In Vṛndāvana Lord Kṛṣṇa sometimes exhibits the functions of such incarnations.
In the Brahmāṇḍa Purāṇa it is said, "The same Personality of Godhead who is known in Vaikuṇṭha as the four-handed Nārāyaṇa, the friend of all living entities, and in the milk ocean as the Lord of Śvetadvīpa, and who is the best of all puruṣas, appeared as the son of Nanda. In a fire there are many sparks of different dimensions; some of them are very big, and some are small. The small sparks are compared to the living entities, and the large sparks are compared to the Viṣṇu expansions of Lord Kṛṣṇa. All the incarnations emanate from Kṛṣṇa, and after the end of their pastimes they again merge with Kṛṣṇa."
Therefore in the various Purāṇas Kṛṣṇa is described sometimes as Nārāyaṇa, sometimes as Kṣīrodakaśāyī Viṣṇu, sometimes as Garbhodakaśāyī Viṣṇu and sometimes as Vaikuṇṭhanātha, the Lord of Vaikuṇṭha. Because Kṛṣṇa is always full, Mūla-saṅkarṣaṇa is in Kṛṣṇa, and since all incarnations are manifested from Mūla-saṅkarṣaṇa, it should be understood that He can manifest different incarnations by His supreme will, even in the presence of Kṛṣṇa. Great sages have therefore glorified the Lord by different names. Thus when the original person, the source of all incarnations, is sometimes described as an incarnation, there is no discrepancy.
(Sri Caitanya Caritamrta--1:5:132--purport).