The Four Elements Of Nature. Phases Four is made up of the four elements of nature. In creating the human form David Grieco studies nature and the affects it has on the human body and mind. These pieces held in this Phase brings nature to the human spirit and they meet in Bronze. P4:p1 is "Wind" created looser than his other pieces visually honoring nature and the need for it in the human spirit. There are only four pieces in this series an as in other Phases closes, with a monument.