According to Bhagavad-gītā there are eighteen items in culturing knowledge. By such culture of knowledge one becomes gradually prideless, devoid of vanity, nonviolent, forbearing, simple, devoted to the great spiritual master, and self-controlled. By culture of knowledge one becomes unattached to hearth and home and becomes conscious of the miseries due to death, birth, old age and disease. And all culture of knowledge culminates in devotional service to the Personality of Godhead, Vāsudeva. Therefore, Vāsudeva is the ultimate aim in culturing all different branches of knowledge. Culture of knowledge leading one to the transcendental plane of meeting Vāsudeva is real knowledge.
(Srimad Bhagavatam--1:2:28-29--purport).

The devotees of the Lord are so forbearing that even though they are defamed, cheated, cursed, disturbed, neglected or even killed, they are never inclined to avenge themselves.
(Srimad Bhagavatam--1:18:48--translation).

The Lord Himself comes to display His transcendental pastimes, typically represented at Vṛndāvana, Mathurā and Dvārakā. He appears just to attract the conditioned souls back to Godhead, back home to the eternal world. But for want of sufficient piety, the onlookers are not attracted by such pastimes of the Lord. In Bhagavad-gītā it is said that only those who have completely surpassed the way of sinful reaction can engage themselves in the transcendental loving service of the Lord. The entire Vedic way of ritualistic performances is to put every conditioned soul on the path of piety. By strict adherence to the prescribed principles for all orders of social life, one can attain the qualities of truthfulness, control of the mind, control of the senses, forbearance, etc., and can be elevated to the plane of rendering pure devotional service to the Lord. Only by such a transcendental vision are one's material hankerings fully satisfied.
(Srimad Bhagavatam--3:2:11--purport).

"For even if one cuts a tree, it never protests, and even if it is drying up and dying, it does not ask anyone for water."
This practice of forbearance (taror iva sahiṣṇunā) is very difficult, but when one actually engages in chanting the Hare Kṛṣṇa mantra, the quality of forbearance automatically develops. A person advanced in spiritual consciousness through the chanting of the Hare Kṛṣṇa mantra need not practice to develop it separately, for a devotee develops all good qualities simply by chanting the Hare Kṛṣṇa mantra regularly.
(Sri Caitanya Caritamrta--1:17:28--translation and purport).

When Lord Caitanya declares tṛṇād api su-nīcena taror iva sahiṣṇunā, He indicates that one must be above the material conception of life. When one thoroughly understands that he is not the material body but a spiritual soul, he is even humbler than a man of the lower castes, for he is spiritually elevated. Such humility, in which one thinks himself lower than the grass, is called su-nīcatva, and being more tolerant than a tree is called sahiṣṇutva, forbearance. Being situated in devotional service, not caring for the material conception of life, is called amānitva, indifference to material respect; yet a devotee thus situated is called māna-da, for he is prepared to give honor to others without hesitation.
(Sri Caitanya Caritamrta---1:17:44--purport).

"Devotees are always tolerant, forbearing and very merciful. They are the well-wishers of every living entity. They follow the scriptural injunctions, and because they have no enemies, they are very peaceful. These are the decorations of devotees."
(Sri Caitanya Caritamrta---2:22:81--translation).