At Brunton's urging, Masson went to Harvard University to study Sanskrit. While at Harvard, Masson became disillusioned with Brunton. Brunton and his influence on the Masson family form the subject of Masson's autobiographical book "My Father's Guru: A Journey Through Spirituality and Disillusion". Harvard University granted Masson a B.A. in 1964 and a Ph.D. with Honors in 1970. His degrees were in Sanskrit and Indian Studies. While undertaking his Ph.D., Masson also studied, supported by fellowships, at the École Normale Supérieure in Paris, the University of Calcutta, and the University of Poona.