A great poem in World Literature, Dakshinamurti Stotra reveals the Poet and the Mystic in Sri Sankaracarya in unison at the highest altitude of his being.
Nature grinds all of us. Keep count of the ounce of pleasure you get. In the long run, nature did her work through you, and when you die your body will make other plants grow. Yet we think all the time that we are getting pleasure ourselves. Thus the wheel goes round.
-Swami Vivekananda