The ONE begins to become the MANY, yet in its innermost essence each of the “many” is still the ONE (the Only One), which remains infinite in its absoluteness, while appearing as “many” in its relativeness, or its conditioned, differentiated state.

– The Mahatma Letters to A. P. Sinnett, Letter 15, 1882, Theosophical University Press Edition

Who of them has penetrated into its Arcana, into the innermost Essence of things and its primary correlations?

– H. P. Blavatsky: ‘The Secret Doctrine: The Synthesis of Science, Religion, and Philosophy’, 1888

He who would hear the voice of Nada [the soundless sound] and comprehend it, he has to learn the nature of Dharana [Inner Concentration]. Having become indifferent to objects of perception, the pupil must seek out the Rajah of the senses, the Thought-Producer, he who awakes illusion.

– H. P. Blavatsky: ‘The Voice of the Silence’, 1889