Change is not the constant, change is a reflection of the contants... like time, the essence of string theory, opportunity, a mother's love, knowledge, compound interest, and doubt. No constants, no predictability, no success, no failure, no learning, no future.
I don't agree that there is no perfection. So much experience is subjective, well actually, virtually all of it is. So when I hear or see or taste or experience that which is beyond my highest expectation... at that moment... perfection! Then, tick tock, it changes.