In this quote, Mark Twain expresses his admiration for his own book about Joan of Arc, asserting that it is not only his favorite work but also his best. He demonstrates a strong sense of self-awareness and confidence in his own judgment about the quality of his work. This quote, therefore, speaks to the importance of self-evaluation and self-confidence in one’s own creations.

Twain’s deep appreciation for his own work on Joan of Arc might be due to the fact that the book is a departure from his typical humor-filled narratives. Instead, it is a serious, well-researched historical novel that portrays Joan of Arc as a national heroine and martyr of France. Twain’s candidness about his personal preference and his boldness in declaring this book as his best work reflect his authenticity as a writer.

In today’s world, this quote can be interpreted as an encouragement to pursue passion projects or work that one truly believes in, even if it deviates from what is expected or conventional. It also emphasizes the importance of self-belief and the courage to stand by one’s own work, despite what others might think.

In terms of personal development, Twain’s quote might inspire individuals to be unafraid of expressing their unique perspectives or exploring new areas, and to have confidence in their own judgments and abilities. It encourages us to be our own biggest fans, to appreciate our own work, and to not be afraid to say “this is my best work” when we truly believe it is.