Every living entity has an intimate relationship with God. One should therefore glorify the Lord in the adoration of śānta-rasa or revive his eternal relationship with Viṣṇu as a servant in dāsya-rasa, a friend in sakhya-rasa, a parent in vātsalya-rasa or a conjugal lover in mādhurya-rasa. All these relationships are on the platform of love. Viṣṇu is the center of love for everyone, and therefore the duty of everyone is to engage in the loving service of the Lord.
(Srimad Bhagavatam------7:6:2------purport).

Here is Bhagavad-gītā. Learn everything very particularly, very minutely. And it is open for everyone. Kṛṣṇa spoke Bhagavad-gītā to Arjuna, not for Arjuna. He came for everyone because He loves everyone. Everyone is son.
sarva-yoniṣu kaunteya
mūrtayaḥ sambhavanti yāḥ
tāsāṁ brahma mahad yonir
ahaṁ bīja-pradaḥ pitā
(B.G.14:4)
He is the seed-giving father. Don't take Kṛṣṇa as a foreigner or something else. No. He is your father, original father, seed-giving father.
(Lecture on Bhagavad-Gita------7:4------by Srila Prabhupada).

This is universal. As soon as you become Kṛṣṇa conscious, as soon as you become God conscious, then your real universal, ideal, universal consciousness develops. Otherwise it is all simply jugglery. There are so many doctrines of universal love, universal friendship, fraternity, but they are fighting, and they are killing simply, because there is no God consciousness. If you are universal, if you are after universal love, then how you can maintain regular slaughterhouse? How you can think that an American gentleman or lady is your countryman and not a cow, and not a goat, not a serpent? Where is your universal idea?
So unless there is development of God consciousness, this universal ideas, oh, these are nonsense. There cannot be. It is all false, jugglery of words. So first business is to understand your identity, identity of God, your relationship, and your action reformed in that way. Then there is question of universal, brotherhood, universal... Otherwise it is simply jugglery of words.
If you are thinking of universal way, how you can give protection to a human being born in America, and send a cow to the slaughterhouse. What is your reason?
Guest: This would be a personal love.
Prabhupāda: Universal means all. You have to love everyone.
(Lecture on Bhagavad-Gita------10:8------by Srila Prabhupada).

When we come to the spiritual platform, then actual love begins. Mad-bhaktiṁ labhate parām. That love begins... If we can love Kṛṣṇa, then, through Kṛṣṇa's love, we can expand our love for everyone. Yathā taror mūla-niṣecanena tṛpyanti tat-skandha-bhujopaśākhāḥ (S.B.4:31:14). Just like watering the root of the tree, the energy is expanded to the limbs, to the flowers, to the branches, similarly, if we want to love... Everyone... Just like we are coming, some patriot. Nobody loves nobody; that is all professional business. If we actually love Kṛṣṇa, then we can expand our love: patriotism, socialism, this "ism," that... Just like we are trying to spread this Kṛṣṇa consciousness movement all over the world because on account of love. Someway or other, we have come in contact with Kṛṣṇa. We are understanding that these people are in māyā or in ignorance, they do not know how to become happy. So our little attempt is "Let them become Kṛṣṇa conscious." This is out of love. Samaḥ sarveṣu bhūteṣu. Everyone is suffering for want of Kṛṣṇa consciousness, therefore we are taking so much trouble. This is at least one side, that Kṛṣṇa wants them to deliver, and if we work on behalf of Kṛṣṇa, that is also love. We love Kṛṣṇa.
(Lecture on Srimad Bhagavatam------7:6:9------by Srila Prabhupada).

Guest (5): In Bhagavad-gītā Śrī Kṛṣṇa says, "I live in everybody."
Prabhupāda: Who denies that? That does not mean God is everything.
Guest (5): No. God is not everything.
Prabhupāda: Then dvaitavāda—everything and God is different. That is dvaitavāda.
Guest (5): Then we have to love everybody, everything.
Prabhupāda: So who says no? Unless we love everyone, why we are traveling all over the world?
Guest (5): Love is God, accept, paraṁ dharma.
Prabhupāda: Yes.
(Lecture on Sri Caitanya Caritamrta------2:8:128------by Srila Prabhupada).

Prabhupāda:
abhidheya-nāma 'bhakti', 'prema'-prayojana
puruṣārtha-śiromaṇi prema mahā-dhana
So after understanding our relationship with Kṛṣṇa... Every understanding has its ultimate goal. So the understanding is that we are eternally related with Kṛṣṇa. Forgetting this relationship, we are now engaged in relationship with this material body, which I am not. Therefore I have to revive my activities which is directly in relationship with Kṛṣṇa. And that is called to act in Kṛṣṇa consciousness. And development of that Kṛṣṇa consciousness will be ended in love of, full love of Kṛṣṇa. When we reach that stage, love of God, love of Kṛṣṇa, then we love everyone because Kṛṣṇa is everyone. Without coming to that central point, our love on the material conception of life—equality, fraternity, brotherhood—are all simply cheating process. That is not possible. So come to that stage.
(Lecture on Sri Caitanya Caritamrta------2:20:125------by Srila Prabhupada).

Everyone wants to love. That is natural propensity. Everyone. When there is no loving object, then in this material world we sometimes love cats and dogs. You see? Because I must love somebody. If I don't find any suitable person lovable, then I turn my love to some hobby, to some animal, like that, because the love is there. So this is dormant. Our love for Kṛṣṇa is dormant. It is within us, but because we have no information of Kṛṣṇa, therefore we are reposing our love to something which is frustration. That is not the object of love. Therefore we are frustrated. So many instances we have got, we did not describe. But here in this material world, love is 99.9% all frustration, because the love is not reposed to the proper place. The proper place is Kṛṣṇa. If we love Kṛṣṇa, then we can love everyone. Just like if we pour water on the root of the tree then the other parts of the tree, leaves and flowers and fruits and branches, automatically... So if we learn to love Kṛṣṇa, then we can perfectly love others.
(Lecture on Sri Caitanya Caritamrta------2:22:11-15------by Srila Prabhupada).