The Bhagavad Gita is a spiritual handbook that can be of great assistance to all seekers of the truth. Proper practice of the methods mentioned therein can help one, in this very life to attain that which is known as Samadhi, Nirvana, Enlightenment or Liberation. There is no pre-requisite to either join or leave any particular religious denomination to practice these methods, as the Gita teaches spirituality rather than religiosity. Accommodating all types of persons, the various paths shown in the Bhagavad-Gita culminate in the unity underlying all existence. By any of these paths, all will surely attain God as they understand Him. The central theme of the Bhagavad-Gita is the unity, interdependence and subjectiveness of the cosmic manifestation. Such a concept is also now accepted in the field of quantum physics, which, from one perspective, may be perceived as a convergence of science and spirituality.