The twentieth letter of the Hebrew alphabet, it symbolizes "the head." Reish is solitude, it is fecundity in Sexual Alchemy; it is the Christified Head, the outcome of the Great Arcanum. Its Kabbalistic value is 200.
"Tremendous is the effort and the vigilance that is needed from second to second, from moment to moment, in order to not fall into illusions. One minute of unawareness is enough for the mind to be already dreaming about something else, distracting it from the job or deed that we are living at the moment."