What is a summary of the book of ecclesiastes?

Answer 1

A most misunderstood book of Scripture, unfortunately. Ecclesiastes asks many questions that are revelant to the meaning of life, declaring the utter futility of a life without God.

Ecclesiastes 12:7-8New King James Version (NKJV)

7 Then the dust will return to the earth as it was,

And the spirit will return to God who gave it.

8 "Vanity of vanities," says the Preacher,

"All is vanity."

The 'mood' of the book is one of 'joy.' King Solomon speaks of finding pleasure in life despite all the troubles (often self-inflicted) that plaque it. The proper fear (awe) and worship of God gives this joy. The faithful and obedient worshipper experiences this joy, rejoicing in the gifts God has given them.

Answer 2

It's a Greek rendition of the book's Hebrew title (Kohellet) and it means "the one who assembles" (brings congregations together).