Raja Yoga is said to be the king of all Yogas because it is compatible with all other Yogas and is suitable to almost all human temperaments. One can remain in his own faith and at the same time practice Raja Yoga. One may have faith in one religion or other, or may not have faith in any religion; it does not matter for practice of Raja Yoga.
The path of Raja Yoga is called the Mystic Path, because the yoga practitioner has to practice regularly certain poses and postures, physical and mental, and one has to practice them in solitude of nature or in the solitude of own room, where there will be nothing to disturb, where one will be left alone with oneself and one`s own thought. But there is nothing secret or mysterious about this path. On the contrary, it tries to solve the so called mysteries. Basing on the strong foundation of logic and reason, it directs the individual souls towards higher development, ultimately to make them realise the spirituality taught by all religions of the world.
Raja Yoga is practiced as ashtanga yoga described by Patanjalii as yama, niyama, asana, pranayama, pratyahara, dharana, dhyana, samadhi.
Dr.Mahesh Chandra Panda