What could be heavier and more impenetrable than a rock, the densest of all forms? And yet some rocks undergo a change in their molecular structure, turn into crystals, and so become transparent to the light.
Eckhart TolleThere are two levels to your pain: the pain that you create now, and the pain from the past that still lives on in your mind and body. Ceasing to create pain in the present and dissolving past pain - this is what I want to talk about now.
Eckhart Tolle