He hath made all things good in their time, and hath delivered the world to their consideration, so that man cannot find out the work which God hath made from the beginning to the end.
And I understood that man can find no reason of all those works of God that are done under the sun: and the more he shall labour to seek, so much the less shall he find: yea, though the wise man shall say, that he knoweth it, he shall not be able to find it.
And I have given my heart to know prudence, and learning, and errors, and folly: and I have perceived that in these also there was labour, and vexation of spirit,