Everything will change. Nothing is exempt from the touch of change. Time has watched Earth being made. It has watched it cool down and watched the oceans appear. It has infinite patience. It has watched everything change and change and change.
Somehow, the human being was created and given the ability to feel. Of all the things I can feel, I can feel joy, I can feel peace. And I have in this life the possibility of not being affected by all the changes.
Without a worry about tomorrow or yesterday, I can feel fulfilled. When that fulfillment is there, it is timeless. Everything else is bound by time.