I didn't know; maybe it was eternal. Time is like a river. It never goes back. We all live like geese swimming in the river. The trees, the hill, the grass and the sun are witnesses that I could not relive the past. The water of the river will flow to the ocean finally. It will flow to a bank of emotion. It loves, hates, and weeps. Nevertheless, our memories of the ocean will linger on, long after our footprints in the sand are gone, just like the everlasting past might even fade away someday. I sighed with sadness as I faced the truth.