Osho was a genius, who was a philosophic rebel. The philosopher is a rebel, he is against the outworn fetishes of a purblind social system !
Osho said that both East and West are extremes. In the East sex is suppressed and in the West sex is free !
He advocated following none and in following one's own Conscience.
His excellent book " Be Still and Know " is an excellent treatise on Mysticism. He postulated a region called " No Mind ", the equivalent of Cosmic Consciousness of transcendental philosophy.