Where is the Silent Witness?

Thank you for all your sharing of wisdom.  I especially love the quotes and inspiration you twitter to the farthest ends of the Universe.  Re the ‘silent witness’:  when I try to meditate I have a sense that the silent witness is sort of watching over me rather than within me, and then I feel that the silent witness is everywhere and I have dissolved into it.   My question is: am I being too cerebral thinking of the silent witness outside of me rather than within me.