One who is paṇḍita—paṇḍita means learned—he does not make any distinction between a learned brahmin or a dog or a cat or a cow, because he sees the spirit.
So we have come to that spiritual platform. We have to give up our this sense gratification process, and that is the teaching of Lord Caitanya. And Caitanya Mahāprabhu practically demonstrated how to adopt that life of pure sense gratification, or pure utilization of the senses. He said, jīvera svarūpa haya nitya kṛṣṇa-dāsa (CC Madhya 20.108).
Jīvera svarūpa haya means the real nature of the living entity is eternal servitor, eternal servant of Lord Kṛṣṇa. The same thing what Kṛṣṇa taught in the Bhagavad-gītā, Caitanya Mahāprabhu taught also in His . . . this Bhāgavata-dharma teaching, and practically He showed how to do it. That is His specially.
Lord Kṛṣṇa said, sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja (BG 18.66):
"You give up all your material engagements. Simply just surrender unto Me. I shall give you all protection from all reaction of your past sinful activities." Because we are creating our next body in this life. So if we become sinful, or if we act only sinful activities, then we get next body a very lower class of body, even as the germ in the stool. You see? There are so many varieties of bodies. And if we act nicely, piously, then we get better body. Ūrdhvaṁ gacchanti sattva-sthāḥ.
Those who are acting, those who are situated on the platform of goodness, they are promoting their existential status in higher planets. Ūrdhvaṁ gacchanti sattva-sthā madhye tiṣṭhanti rājasaḥ (BG 14.18):
And those who are in the modes of passion, they will remain here. And jaghanya-guṇa-vṛtti-sthā adho gacchanti tāmasāḥ: and those who are very addicted to all abominable habits, they are clearing their way to hellish life. So to abominable life is these four principles. That we are trying to avoid.
So Lord Caitanya's teaching, the sum and substance of His teaching, is to understand that we are eternal servant of God, and if we immediately engage our energy to satisfy Kṛṣṇa, then immediately we are transferred to the spiritual platform. And if we stick to that activities on the spiritual platform, then, as assured by Lord Kṛṣṇa, then, after leaving this body, we go back to Kṛṣṇa, Vṛndāvana, go back to Godhead, back to home. That is our peaceful . . . eternal, peaceful life. We should endeavor for that.