When power leads man towards arrogance, poetry reminds him of his limitations. When power narrows the areas of man's concern, poetry reminds him of the richness and diversity of his existence. When power corrupts, poetry cleanses, for art establishes the basic human truths which must serve as the touchstones of our judgement. The artists, however faithful to his personal vision of reality, becomes the last champion of the individual mind and sensibility against an intrusive society and an officious state. The great artist is thus a solitary figure. He has, as Frost said, "a lover's quarrel with the world." In pursuing his perceptions of reality he must often sail against the currents of his time. This is not a popular role.