what is the theme of how the grinch stole christmas

The main theme of "How the Grinch Stole Christmas" is the power of love and kindness to overcome hate and selfishness. The Grinch initially hates Christmas because he feels excluded from the joy and happiness of the holiday season. However, after seeing the true meaning of Christmas through the eyes of little Cindy Lou Who, he realizes that he has been blinded by his own anger and bitterness. The story teaches us that even the most hardened hearts can be changed by the spirit of Christmas.