... the Upanishads speak of jyotir brahma, the Light that is Brahman. Very often the sadhak feels a flow of Light upon him or around him or a flow of Light invading his centres or even his whole being and body, penetrating and illumining every cell and in that Light there grows the spiritual consciousness and one becomes open to all or many of its workings and realisations. Appositely I have a review of a book of Ramdas (of the Vision) before me in which is described such an experience got by the repetition of the Rama mantra, but, if I understand rightly, after a long and rigorous self-discipline. "The mantra having stopped automatically, he beheld a small circular light before his mental vision. This yielded him thrills of delight. This experience having continued for some days, he felt a dazzling light like lightning, flashing before his eyes, which ultimately permeated and absorbed him. Now an inexpressible transport of bliss filled every pore of his physical frame." It does not always come like that—very often it comes by stages or at long intervals, at first, working on the consciousness till it is ready. <ref>https://incarnateword.in/cwsa/29/bhakti-yoga-and-vaishnavism#p48</ref>
=Vibrations, Sounds, Speech=
==Vibrations Preceding Sound==
Some thoughts.... Are they thoughts?... It's something much higher than thought, much higher than ideas.... It is the VISION OF KNOWLEDGE in an extremely luminous region where vibrations are very precise and very strong; and this is obviously what, as it descends, translates into sounds and words (but this is much lower down). In the form closest to the Origin, they are luminous vibrations. <ref>http://incarnateword.in/agenda/03/july-25-1962#p67</ref>
==Human Speech and the Word==
Human speech is only a secondary expression and at its highest a shadow of the divine Word, of the seed-sounds, the satisfying rhythms, the revealing forms of sound that are the omniscient and omnipotent speech of the eternal Thinker, Harmonist, Creator. The highest inspired speech to which the human mind can attain, the word most unanalysably expressive of supreme truth, the most puissant syllable or mantra can only be its far-off representation. <ref>http://incarnateword.in/cwsa/18/the-supreme-word#p15</ref>
===Human Speech and Silence of Plants===
Man is the first animal on earth to be able to use articulate sounds. Indeed, he is very proud of this capacity and exercises it without moderation or discernment. The world is deafened with the sound of his words and sometimes one almost misses the harmonious silence of the plant kingdom.
<ref>http://incarnateword.in/cwm/12/the-four-austerities-and-the-four-liberations#p36</ref>
=Why Japa?=