A devotee is always free from all bad association. Sometimes one is praised and sometimes one is defamed; that is the nature of human society. But a devotee is always transcendental to artificial fame and infamy, distress or happiness. He is very patient. He does not speak of anything but the topics about Kṛṣṇa; therefore he is called silent. Silent does not mean that one should not speak; silent means that one should not speak nonsense. One should speak only of essentials, and the most essential speech for the devotee is to speak for the sake of the Supreme Lord.
(Bhagavad-Gita-------12:18-19--------purport).

One who is equal to friends and enemies, who is equipoised in honor and dishonor, heat and cold, happiness and distress, fame and infamy, who is always free from contaminating association, always silent and satisfied with anything, who doesn't care for any residence, who is fixed in knowledge and who is engaged in devotional service—such a person is very dear to Me.
(Bhagavad-Gita-------12:18-19-------translation).

A devotee who is not dependent on the ordinary course of activities, who is pure, expert, without cares, free from all pains, and who does not strive for some result, is very dear to Me. One who grasps neither pleasure or grief who neither laments nor desires, and who renounces both auspicious and inauspicious things, is very dear to Me. One who is equal to friends and enemies, who is equipoised in honor and dishonor, heat and cold, happiness and distress, fame and infamy, who is always free from contamination, always silent and satisfied with anything, who doesn't care for any residence, who is fixed in knowledge and engaged in devotional service, is very dear to Me. He who follows this imperishable path of devotional service and who completely engages himself with faith, making Me the supreme goal, is very, very dear to Me."
(Teachings of Lord Caitanya).