Dhruva Mahārāja lamented: I was under the influence of the illusory energy; being ignorant of the actual facts, I was sleeping on her lap. Under a vision of duality, I saw my brother as my enemy, and falsely I lamented within my heart, thinking, "They are my enemies."
Real knowledge is revealed to a devotee only when he comes to the right conclusion about life by the grace of the Lord. Our creation of friends and enemies within this material world is something like dreaming at night. In dreams we create so many things out of various impressions in the subconscious mind, but all such creations are simply temporary and unreal. In the same way, although apparently we are awake in material life, because we have no information of the soul and the Supersoul, we create many friends and enemies simply out of imagination. Śrīla Kṛṣṇadāsa Kavirāja Gosvāmī says that within this material world or material consciousness, good and bad are the same. The distinction between good and bad is simply a mental concoction. The actual fact is that all living entities are sons of God, or by-products of His marginal energy. Because of our being contaminated by the modes of material nature, we distinguish one spiritual spark from another. That is also another kind of dreaming. It is stated in the Bhagavad-gītā that those who are actually learned do not make any distinction between a learned scholar, a brāhmaṇa, an elephant, a dog and a caṇḍāla. They do not see in terms of the external body; rather, they see the person as spirit soul. By higher understanding one can know that the material body is nothing but a combination of the five material elements. In that sense also the bodily construction of a human being and that of a demigod are one and the same. From the spiritual point of view we are all spiritual sparks, parts and parcels of the Supreme Spirit, God. Either materially or spiritually we are basically one, but we make friends and enemies as dictated by the illusory energy. Dhruva Mahārāja therefore said, daivīṁ māyām upāśritya: the cause of his bewilderment was his association with the illusory, material energy.
(Srimad Bhagavatam--4:9:33--translation and purport).

Persons who have no discrimination in the matter of foodstuff and who eat all sorts of rubbish are compared tohogs. Hogs are very much attached to eating stools. So stool is a kind of foodstuff for a particular type of animal. And even stones are eatables for a particular type of animal or bird. But the human being is not meant for eating everything and anything; he is meant to eatgrains, vegetables, fruits, milk, sugar, etc. Animal food is not meant for the human being. For chewing solid food, the human being has a particular type of teeth meant for cutting fruits and vegetables. The human being is endowed with two canine teeth as a concession for persons who will eat animal food at any cost. It is known to everyone that one man's food is another man's poison. Human beings are expected to accept the remnants of food offered to Lord Śrī Kṛṣṇa, and the Lord accepts foodstuff from the categories of leaves, flowers, fruits, etc. (B.G.9:26). As prescribed by Vedic scriptures, no animal food is offered to the Lord. Therefore, a human being is meant to eata particular type of food. He should not imitate the animals to derive so-called vitamin values. Therefore, a person who has nodiscrimination in regard to eating is compared to a hog.
(Srimad Bhagavatam--2:3:19--purport).

Realized devotees are like bumblebees maddened by their own mellows at Kṛṣṇa's lotus feet. The scent of those lotus feet perfumes the entire world. Who is the realized soul that could give them up?
(Sri caitanya Caritamrta--3:20:156--purport).