Complex sentence: His dissertation director, V. Madhusudan Reddi, devoted to Sri Aurobindo, a poet, mystic, and jogi; while he approved the thesis he refused to allow Narisetti to graduate.
Split into simpler sentences: His dissertation director, V. Madhusudan Reddi is devoted to Sri Aurobindo, a poet and mystic. While Reddi approved the thesis he refused to allow Narisetti to graduate.