Primary Sounds (version 2)
This picture can used as a focus for meditation. Sit comfortably and become aware of your chest rising and falling with your breath. Now breathe in through your nose down into your belly with your lips closed. This is the humming sound of the blue letter Mem in the lower part of this picture.
Open your lips and breathe out through your teeth. This is the hissing sound of the red letter Shin in the upper part of this picture. Both are joined with the yellow diagonal (Wow) to form the silent letter Aleph which represents Breath.
If you want to deepen this meditation, breathe in and then pause in the space in-between the in breath and the out breath (the diagonal Wow). Be aware that your chest is full. Now breathe out and pause in the space in-between the out breath and the in breath. Be aware that your chest is empty.
Becoming comfortable in transitional or liminal spaces - like the space in-between the breath - allows us to have more Wow experiences and become more Spiritual. In Sefer Yetzirah the Hebrew word that is used for Breath is רוח Ruach. This word also means Spirit. It can also be read Revach רוח - space. Thus, Mem hums in the in-breath; Shin hisses in the out-breath; Aleph completes the Breath with the spiritual space in-between them. (See also Primary Sounds version 1, and Primary Shapes).