A single word naming some divine attribute or human ideal is another good focus for a concentration exercise. It should be slowly but silently repeated to oneself at certain intervals whilst its significance should be held all the time in the mind. Every other idea should be kept out. Words which are suitable to perform this office may be safely left to the aspirant's taste and mood of the moment. Here are instances: reality, truth, love, being, illusion, goodness, pity, purity, and peace.
In this exercise, he repeats mentally and slowly over and over again a significant key word like "Reality" or a pithy formula like "In my higher being, I am beyond weakness and sin."
Incessant repetition of a brief mystic formula, a short holy phrase, will keep out all other thoughts and ultimately even lapse itself. The mind will then fall into stillness, the heart be inundated with quiet.
-- Notebooks Category 4: Elementary Meditation > Chapter 6 : Mantrams, Affirmations > # 132
