There are men who want to understand the Absolute Truth through philosophy, through science, so it is the duty of those who are scientifically advanced, philosophically advanced or materially advanced or wealthy, they should engage all this for Kṛṣṇa's service.
Because we have to engage ourself. Devotee means prāṇair arthair dhiyā vācā (SB 10.22.35).
Life, wealth—prāṇa means life. Wealth . . . artha means wealth. Prāṇa artha dhiyā—intelligence, prāṇa artha dhiyā vācā, and words. If one has no money, no intelligence, he can use his words. He can go to the people, and he can say: "Please chant Hare Kṛṣṇa." He can do. So this preaching work, the service of Kṛṣṇa, is not, I mean to say, blocked by any disqualification if one is ready to serve.
So Śrīdhara Mahārāja says that this pride, ete gunah . . . (indistinct) . . . bhavanti. If one is simply materially qualified, that becomes the cause of his false prestige and pride, that's all, what to speak of purifying himself. And he . . . bhavanti na śuddhaye. Śuddhaye, śuddhaye means purification, the first purificatory process as stated in the Bhagavad-gītā, amānitvam adambhitvam ahiṁsā (BG 13.8).
Amānitvam—humble and meek. Caitanya Mahāprabhu says, tṛṇād api sunīcena taror api sahiṣṇunā (CC Adi 17.31)—humbler that the blade of grass, and tolerant than the tree.