"A soft heart is compared to honey, to butter and to nectar. And the condition of the mind is compared to sunshine. As honey and butter become melted even in slight sunshine, softhearted persons become easily melted. Nectar, however, is by its nature always liquid. And the hearts of those who are in pure ecstatic love with Krishna are by nature always liquified, just like nectar."
(Nectar of Devotion, Chapter 31)
"Ecstatic love for Krishna (prema) is described in the Bhakti-rasāmṛta-sindhu (1.41) as follows:
samyaṅ masṛṇita-svānto mamatvātiśayāṅkitaḥ
bhāvaḥ sa eva sāndrātmā budhaiḥ premā nigadyate
'When the heart is completely softened and devoid of all material desires and when one’s emotional feelings become very strong, one becomes very much attached to Krishna. Such purified emotion is known as pure love.'"
(Caitanya-caritamrta Madhya 19.177, Purport)
"A person who constantly engages in devotional service to Krishna by chanting His holy name becomes so transcendentally attached to the chanting that his heart becomes softened without extraneous endeavor. When this happens, he exhibits transcendental ecstasies by sometimes laughing, sometimes crying, sometimes singing and sometimes dancing -- not exactly in an artistic way, but just like a madman."
(Teachings of Lord Caitanya, Ch. 19)
"Any man who has genuine devotion to the Lord has all the good qualities which are found in godly persons or in the demigods, whereas the nondevotee, however advanced he may be in material qualifications by education and culture, lacks in godly qualities. As such, Arjuna, just after seeing his kinsmen, friends and relatives on the battlefield, was at once overwhelmed by compassion for them who had so decided to fight amongst themselves. As far as his soldiers were concerned, he was sympathetic from the beginning, but he felt compassion even for the soldiers of the opposite party, foreseeing their imminent death. And while he was so thinking, the limbs of his body began to quiver, and his mouth became dry. He was more or less astonished to see their fighting spirit. Practically the whole community, all blood relatives of Arjuna, had come to fight with him. This overwhelmed a kind devotee like Arjuna. Although it is not mentioned here, still one can easily imagine that not only were Arjuna's bodily limbs quivering and his mouth drying up, but he was also crying out of compassion. Such symptoms in Arjuna were not due to weakness but to his softheartedness, a characteristic of a pure devotee of the Lord."
(Bhagavad-gita As It Is 1.28, Purport)
"It is the custom -- according to kṣatriya fighting principles -- that an unarmed and unwilling foe should not be attacked. Arjuna, however, decided that even if attacked by the enemy in such an awkward position, he would not fight. He did not consider how much the other party was bent upon fighting. All these symptoms are due to soft-heartedness resulting from his being a great devotee of the Lord."
(Bhagavad-gita As It Is 1.45, Purport)
"While observing the situation of his enemy, Arjuna stood up on the chariot, but he was so afflicted with lamentation that he sat down again, setting aside his bow and arrows. Such a kind and soft-hearted person, in the devotional service of the Lord, is fit to receive self-knowledge."
(Bhagavad-gita As It Is 1.46, Purport)
"Brahmana means perfect gentleman. A rogue, thief, cannot become brahmana. Brahmana is perfect gentleman. Who feels for others, that is gentleman. Who does not feel for others, for his sense gratification, he is a rogue."
(Srila Prabhupada Morning Walk, Vrindavan, April 9, 1976)
"It is a gentleman’s greatest duty to be compassionate upon a person who is distressed."
"The devotee knows that the Lord wants all the fallen souls to come back to Home, and therefore the devotee always tries to induce the conditioned souls to take to Krishna Consciousness by various means. Therefore the conclusion is that a devotee is more kind than the Lord Himself."
(Srila Prabhupada Letter, January 21, 1970)
"My Lord, my heart breaks to see the sufferings of all conditioned souls; therefore I request You to transfer the karma of their sinful lives upon my head. My dear Lord, let me suffer perpetually in a hellish condition, accepting all the sinful reactions of all living entities. Please finish their diseased material life."
(Caitanya-caritamrta Madhya 15.162-163)
"When Śrī Caitanya Mahāprabhu heard Vāsudeva Datta’s statement, His heart became very soft. Tears flowed from His eyes, and He began to tremble."
(Caitanya-caritamrta Madhya 15.164)
"One who executes Śrī Caitanya Mahāprabhu’s mission must be considered eternally liberated. He is a transcendental person and does not belong to this material world. Such a devotee, engaging in the deliverance of the total population, is as magnanimous as Śrī Caitanya Mahāprabhu Himself.
namo mahā-vadānyāya kṛṣṇa-prema-pradāya te
kṛṣṇāya kṛṣṇa-caitanya-nāmne gaura-tviṣe namaḥ
(CC Madhya 19.53)
Such a personality factually represents Śrī Caitanya Mahāprabhu because his heart is always filled with compassion for all conditioned souls."
(Caitanya-caritamrta Madhya 15.163, Purport)
"Why I have come to your country? Because to make you Krishna conscious. So there is love of Krishna. Otherwise why... what is the business, I have come to you? I have no business. Because I love Krishna, I want to see all, everybody in the world, to become Krishna conscious. Otherwise why in this old age we are trying so much?"
(Srila Prabhupada Morning Walk, January 11, 1974)
"I have not come to earn money from your country, but I have come to your country to give you something sublime... not to take from you, not to exploit you, but to give you something sublime."
(Srila Prabhupada Interview, San Francisco, March 9, 1968)
"So if you actually feel for your country, for your community, for your people, just spread this Krishna consciousness. They're dying. You spread this Krishna consciousness. They'll come again to life, and everything will be actually beautiful. That is my request."
(Srila Prabhupada Lecture, Los Angeles, May 31, 1972)