Is he right?
In the light of today's Gospel, you could say that he was right at the time. (In the Gospel, Herod hears about Jesus' miracles, and all the people are saying he must be one of the ancient prophets--or maybe John the Baptist--back from the dead. It couldn't be...something new, could it?)
Qoheleth's pessimistic poetry becomes a reminder of the hopelessness of the human situation when we are left to ourselves: "Salvation we have not achieved for the earth, the inhabitants of the world cannot bring it forth" (Is. 26). But with the coming of Jesus into the world, we can't take Qoheleth totally at his word.
Through a virgin you have brought forth a new birth in our world;Now every day really is new; God is always up to something we could never even dream of. All we need are eyes to see and ears to hear (and "the eye is never filled with seeing, nor the ear with hearing" the infinite wealth of God's grace).
Through your miracles, a new power;
Through your suffering, a new patience;
In your resurrection, new hope;
And in your ascension, a new majesty.
(From the Liturgy of the Hours)