Srimad-Bhagavatam: Canto 7 - Chapter 1 - Verse 10
अव्यक्तलिङ्गो व्यक्तार्थो मनीष्युन्मत्तबालवत् ।कविर्मूकवदात्मानं स दृष्टया दर्शयेन्नृणाम् ॥ १० ॥
avyakta-liṅgo vyaktārthomanīṣy unmatta-bālavatkavir mūkavad ātmānaṁsa dṛṣṭyā darśayen nṛṇām
Although a saintly person may not expose himself to the vision of human society, by his behavior his purpose is disclosed. To human society he should present himself like a restless child, and although he is the greatest thoughtful orator, he should present himself like a dumb man.
A great personality very much advanced in Kṛṣṇa consciousness may not expose himself by the signs of a sannyāsī. To cover himself, he may live like a restless child or a dumb person, although he is the greatest orator or poet.