From A Course In Miracles, today's lesson for me coincidentally happens to be Lesson 125. "In quiet I receive God's Word today." I also highlighted, "We will not judge ourselves today, for what we are can not be judged."
Another aspect of "still" implies steadfastness and commitment. East/West, Being/Doing world views fade away in the realization of Source and our inextricable connections as One. The peace of Absolute Stillness, as has been noted, is an eternal notion beyond every worldly circumstance. "Peace to my mind. Let all my thoughts be still." ACIM, W-pI,221