This I believe: that nothing is static, not even God. All is dynamic, all change, all circulating motion. That which is still, unchangeably still, is dead. When I was a child, I thought as a child, but in the process of attaining adulthood, my thoughts have changed many times. My thoughts are still changing. If ever I permit them to become static, I shall surely die, even though for a while I may continue to breathe.
I believe with Henry David Thoreau that our thoughts are the epochs in our lives. Epochs suggest movement, continuing through time, and epochs of thought suggest a condition always dynamic.