The book of Ecclesiastes is a reflection by 'the Preacher' on the meaning of life 'under the sun' and sits in the wisdom books; it has 12 chapters in the King James Version.
Ecclesiastes is traditionally attributed to Solomon. Ecclesiastes repeats the refrain "vanity of vanities" and contains the well-known poem in Ecclesiastes 3 about a time for every purpose. A well-known passage from this book is Ecclesiastes 3:1-8. Read the full book at Ecclesiastes.