CHAKRAS OR CENTRES
Each of these lotuses is the centre and the storing-house of its own particular system of psychological powers, energies and operations, — each system corresponding to a plane of our psychological existence, — and these flow out and return in the stream of the pranic energies as they course through the Nadis.
By the opening one escapes from the limitations of the surface consciousness bound to the gross body and great ranges of experience proper to the subliminal self, mental, vital, subtle physical are shown to the sadhak.
The two most important things here are the opening of the heart centre and the opening of the mind centres to all that is behind and above them. For the heart opens to the psychic being and the mind centres open to the higher consciousness and the nexus between the psychic being and the higher consciousness is the principle means of siddhi.
The first opening is effected by a concentration in the heart, a call to the Divine to manifest within us and through the psychic to take up and lead the whole nature...The second opening is effected by a concentration of the consciousness in the head (afterwards, above it) and an aspiration and call and a sustained will for the descent of the divine Peace, Power, Light, Knowledge, Ananda into the being... The psychic opening through the heart puts us primarily into connection with the individual Divine, the Divine in his inner relation with us; it is especially the source of love and bhakti. This upward opening puts us into direct relation with the whole Divine and can create in us the divine consciousness and a new birth or births of the spirit.
Our hidden centres of celestial force
Open like flowers to a heavenly atmosphere;
Mind pauses thrilled with the supernal Ray,
And even the transient body then can feel
Ideal love and flawless happiness.