CHĀNDOGYA UPANISHAD · 5.1.5
यो ह वा आयतनं वेदायतनं ह स्वानां भवति ।
मनो ह वा आयतनम् ॥
yo ha vā āyatanaṃ vedāyatanaṃ ha svānāṃ bhavati ।
mano ha vā āyatanam ॥
He who knows the home, becomes a home of his people. The mind indeed is the home.
F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)