What the profit to a man in all the labor he will labor under the sun?

And I looked upon all my works my hands made, and upon the labor I labored to do, and behold, all vanity and striving of the spirit, and no profit under the sun.

And I saw there is profit to wisdom more than to folly, as the excellence of the light above darkness.

And the profit of the earth in all: it is the king being served to the field.