Time isn't precious at all, because it is an illusion. What you perceive as precious is not time but the one point that is out of time: the Now. That is precious indeed. The more you are focused on time—past and future—the more you miss the Now, the most precious thing there is. Why is it the most precious thing? Firstly, because it is the only thing. It's all there is. The eternal present is the space within which your whole life unfolds, the one factor that remains constant. Life is now.

Eckhart Tolle

from The Power of Now: A Guide to Spiritual Enlightenment