Chandra Mohan Jain, also known as Acharya Rajneesh from the 1960s onwards, as Bhagwan Shree Rajneesh, during the 1970s and 1980s and as Osho from 1989, was an Indian mystic, guru, and spiritual teacher who garnered an international following.
A professor of philosophy, he travelled throughout India in the 1960s as a public speaker. His outspoken criticism of socialism, Mahatma Gandhi and institutionalised religion made him controversial. He also advocated a more open attitude towards sexuality: a stance that earned him the sobriquet "sex guru" in the Indian and later international press. In 1970, Osho settled for a while in Bombay. He began initiating disciples and took on the role of a spiritual teacher. In his discourses, he reinterpreted writings of religious traditions, mystics, and philosophers from around the world. Moving to Poona in 1974, he established an ashram that attracted increasing numbers of Westerners. The ashram offered therapies derived from the Human Potential Movement to its Western audience and made news in India and abroad, chiefly because of its permissive climate and Osho's provocative lectures. By the end of the 1970s, there were mounting tensions with the Indian government and the surrounding society.