Understanding 'Sagacity' in Context

During a rainy afternoon, Lily found herself stuck indoors with a stack of books in front of her. One particular book caught her eye; it was full of fascinating tales about ancient kingdoms. As she flipped through the pages, she stumbled upon a story about a wise old king. This king was renowned for his judicious decisions and fair treatment of all his subjects. The author described the king's sagacity as unmatched, stating that he often sought counsel from trusted advisors and welcomed diverse opinions.