Light Upon Light is a book to touch the heart, and awaken the spirit. It takes the lives of some of the great spiritual masters of the last millennium, from Rumi, to twentieth century saint Darshan Singh, and illuminates their inner quests. More than simply biography, Light Upon Light delves into their perceptions of the world, the innermost workings of their minds, and the life incidents that led them to enlightenment. In this sense Light Upon Light is not about the spiritual path; it is designed to take the reader and carry them into the spiritual path, and perceive the wisdom of the masters from within. While author Andrew Vidich PhD has exemplary academic credentials, he writes from the heart, and calls the reader to a direct experience, a "felt sense" of the core of these masters' teachings. He also emphasizes meditation as the universal constant taught by all masters, and has provocative exercises in each chapter to stimulate self-reflection, contemplation, and to give the reader experience of practical meditation techniques. This is a book to be treasured by both long-time spiritual students, and those new to the great masters of the path.