This Shanti Patha — peace invocation — is recited at the beginning of learning in the Taittiriya Upanishad tradition. It is a prayer from teacher and student together, asking to be protected, nourished, and energised as a unit.
'May our learning be radiant' — tejasvee is a beautiful word. It doesn't just mean 'good' or 'complete.' It means luminous, full of inner fire. This is the aspiration: not just knowledge acquired, but wisdom that shines.
The triple Shanti at the end — Shantih Shantih Shantih — is traditionally said to address the three sources of disturbance: Adhidaivika (from cosmic forces), Adhibhautika (from the external world), and Adhyatmika (from within oneself). Three-fold peace for all three.