The book of Ecclesiastes is a part of the Bible and is traditionally attributed to King Solomon. It explores the meaning of life and the futility of human endeavors, often repeating the phrase "vanity of vanities." The author reflects on the temporary nature of worldly pleasures and achievements, suggesting that everything is ultimately meaningless without a deeper purpose. Throughout the text, the writer emphasizes the importance of enjoying life's simple pleasures, like food, friendship, and love. It encourages readers to seek wisdom and live in the moment, while also acknowledging the inevitability of death and the limitations of human understanding.