All materialistic men are mad after possessing all these material opulences, and this is known as the advancement of material civilization. But the result is that by possessing all these material assets one becomes artificially puffed up, intoxicated by such temporary possessions. Consequently, such materially puffed up persons are incapable of uttering the holy name of the Lord by addressing Him feelingly, "O Govinda, O Kṛṣṇa."
(Srimad Bhagavatam---1:8:26----purport).

A helpless man can feelingly utter the holy name of the Lord, whereas a man who utters the same holy name in great material satisfaction cannot be so sincere. A materially puffed up person may utter the holy name of the Lord occasionally, but he is incapable of uttering the name in quality. Therefore, the four principles of material advancement, namely (1) high parentage, (2) good wealth, (3) high education and (4) attractive beauty, are, so to speak, disqualifications for progress on the path of spiritual advancement.
(Srimad Bhagavatam---1:8:26----purport).

The fire in the forest takes place automatically by the force of the air, and similarly the hostility between different groups of politicians takes place by the unseen design of the Lord. The unwanted administrators, puffed up by false power and military strength, thus become engaged in fighting amongst themselves over ideological conflicts and so exhaust themselves of all powers. The history of the world reflects this factual will of the Lord, and it will continue to be enacted until the living beings are attached to the service of the Lord.
(Srimad Bhagavatam---1:11:34---purport).

The Lord has clearly stated in the Bhagavad-gītā that one can know Him only by devotional service. No one can know the Lord by any puffed-up material process of challenge, but the humble devotee can please the Lord by his earnest devotional activities. Thus the Lord reveals Himself proportionately before the devotee.
(Srimad Bhagavatam---2:6:38---purport).

Sometimes the Lord gives extraordinary powers to His devotee, but the devotee knows always that the power belongs to the Personality of Godhead and that the devotee is only an instrument. The pure devotee is never puffed up like the nondevotee class of men who falsely think that they are God. It is astonishing to see how a person who is being kicked by the laws of the Lord's illusory energy at every step can falsely think of becoming one with the Lord. Such thinking is the last snare of the illusory energy offered to the conditioned soul.
(Srimad Bhagavatam----2:9:30---purport).

Any person authorized by either the Lord or by His bona fide representative is already blessed, as is the work entrusted to him. Of course, the person entrusted with such a responsibility should always be aware of his incapability and must always look for the mercy of the Lord for the successful execution of his duty. One should not be puffed up because he is entrusted with certain executive work. Fortunate is he who is so entrusted, and if he is always fixed in the sense of being subordinate to the will of the Supreme, he is sure to come out successful in the discharge of his work.
(Srimad Bhagavatam---3:9:29---purport).

A devotee should not be proud of his acquisitions. The symptoms of a devotee are meekness and humility. Although spiritually very advanced, he will always remain meek and humble, as Kavirāja Gosvāmī and all the other Vaiṣṇavas have taught us by personal example. Caitanya Mahāprabhu taught that one should be humbler than the grass on the street and more tolerant than the tree. One should not be proud or falsely puffed up. In this way one will surely advance in spiritual life.
(Srimad Bhagavatam----3:29:18---purport).

Anger is so detrimental that even a great personality like Dakṣa, out of anger, left the arena where Brahmā was presiding and all the great sages and pious and saintly persons were assembled. All of them requested him not to leave, but, infuriated, he left, thinking that the auspicious place was not fit for him. Puffed up by his exalted position, he thought that no one was greater than he in argument. It appears that all the members of the assembly, including Lord Brahmā, requested him not to be angry and leave their company, but in spite of all these requests, he left. That is the effect of cruel anger.
(Srimad Bhagavatam---4:2:19---purport).

The Lord does not bestow material blessings upon the devotees, for they may be entrapped again in this material world by continuous birth, death, old age and disease. Due to materialistic opulences, persons like Rāvaṇa become puffed up for sense gratification. Rāvaṇa even dared kidnap Sītā, who was both the wife of Lord Rāmacandra and the goddess of fortune, thinking that he would be able to enjoy the pleasure potency of the Lord. But actually, by such action, Rāvaṇa became vidhvaṁsita, or ruined.
Srimad Bhagavatam---4:22:36---purport).