Stillness can be defined as the absence of movement or sound. It's about solitude, silence, tranquility.
It's about presence. Stillness can be elusive.
Stillness doesn't even necessarily mean still. I know that things can still shift and move even in stillness.
That stillness is a prerequisite to understanding and insights, both requiring movement in our minds. I love the phrase inner quietude.
When I'm in inner quietude, I can hear the voice within my inner secrets. I can ask questions in the stillness and hear the answers, or feel them.