Abstract
The future of India certainly lies in the hands of present teachers at all levels of education. A potential and self-introspective teacher is the greatest need of the day. The author believes : a teacher is an instrument of personality building, social service and change and thereby is a silent builder of the nation at large. Aresponsible teacher is not only a contributor of building a nation but enjoys the job satisfaction and contentment at personal level which are the roots for positive thinking. In this article, the writer endeavoured to present the views on (i) the need of a proficient teacher (ii) the qualities of a teacher; (iii) the ethical concern of ateacher in the light of six major Upanisad namely; Katha, Prasna, Mundaka, Taittiriya, Chandogya and Brihadaranyaka.