Adyashanti is an American-born spiritual teacher dedicated to serving the awakening of all beings.

Arnaud Desjardins (1925-2011) was one of the first Europeans to popularize the great Eastern teachings in the West, especially in France.

Daniela Jodorf was born in 1969. After studying law and working as a lawyer in a law firm in Düsseldorf, she began her career as a writer in 1998.

David Godman has lived in India since 1976, mostly at the ashram of Sri Ramana Maharshi. He wrote or co-edited four other books about Sri Ramana and his direct disciples: Be As You Are, No Mind – I Am the Self, Papaji Interviews, and Living by the Words of Bhagavan.

Eli Jaxon-Bear was born Elliot Jay Zeldow in Brooklyn, New York in 1947. His eighteen-year spiritual journey began in 1971 when he was on the run from the FBI during the Vietnam War era.

Gangaji was born Merle Antoinette Roberson in Texas in 1942. In 1990, during her spiritual quest, she met the Indian master Sri Poonja (Papaji). At his feet, she recognized who she and everyone else truly is. Since then, her life has been dedicated to this realization.

Ibn ʿArabi (1165–1240) was a mystical teacher of Islam. His doctrine of the unity of being and human perfection also has an impact in the West.

Lee Lozowick (1943-2010) was an American spiritual teacher who taught thousands of people in North America, Europe, and India since 1975.

Mariana Caplan has explored and practiced many of the world's great mystical traditions for over two decades. She is a professor of Yoga and transpersonal psychology and has written six books in the fields of psychology and spirituality, including Eyes Wide Open!

OM C. Parkin is a wisdom teacher and mystic. He founded the Enneallionce - School of the Fourth Way and the modern Gut Saunstorf Monastery - Place of Silence.

P. D. Ouspensky was born in Moscow in 1878 into a family of artists and intellectuals. He gained worldwide and lasting recognition as the most important expounder of G. I. Gurdjieff's teachings, the teachings of the Fourth Way.

Ramana Maharshi, the most renowned Indian wisdom teacher of the 20th century, began his spiritual quest at 16 and realized that consciousness is immortal.

Regina Sara Ryan writes books and gives seminars. Until the early 1970s, she lived as a Roman Catholic nun in a convent. Since leaving the convent, she has devoted herself to the study of contemplation and mysticism.

Sandra Maitri was a member of the first group in which the Chilean psychiatrist Claudio Naranjo introduced the Enneagram in the United States.

Margit Saritha Wimmer holds a degree in social pedagogy (FH), works with mentally ill adults, and supports people on their individual paths in life. She offers impulses for mindfulness, inner recognition, and meditation.

Shankara (686-718 AD), also known as Shankaracharya, was a prominent spiritual leader and philosopher in India. He founded Advaita Vedanta, debated with scholars even as a child, and left behind an extensive literary legacy. His teachings emphasize the unity of Brahman, the absolute Being, and Atman, the inner Self.

Sri Karapatra Swami (1907-1980) was born as Har Narayan Ojha into a Brahmin family in Pratapgarh, Uttar Pradesh, India. At the age of 19, he left his family, became a monk of the Hindu Dashanami tradition, and a spiritual teacher (Pithadhipati) in Varanasi, India. He is the author of many writings.

Sumiran (born 1969, Voronezh, Russia) is a renowned Russian teacher and mystic in the tradition of Advaita Vedanta and Zen.

Ulrike Porep, a certified psychologist practicing psychotherapy, developed an early interest in the causes of human suffering and the obstacles to natural development. Through her spiritual journey, she discovered essential keys such as the cosmology of the Enneagram and the work with the inner child, in which she is an expert.

William Martin is a psychologist. He earned degrees from the University of California, Berkeley, and Western Theological Seminary. He worked as a pastor and university lecturer and has been deeply involved with Taoism for over twenty years.