When there is a man whose labor is in wisdom, and in knowledge, and with success; yet to a man who has not labored in it, he shall leave it for his share. This also is vanity and a great evil.

And I saw all labour, and all success of work, that it is man's jealousy of his neighbour. This also is vanity and pursuit of the wind.

In the multitude of good they were multiplied eating it: and what the success to its possessors but seeing with his eyes?

I looked again and saw under the sun that the race [does] not [belong] to the swift, the battle [does] not [belong] to the mighty, food [does] not [belong] to the wise, wealth [does] not [belong] to the intelligent, and success [does] not [belong] to the skillful, for time and chance befalls all of them.

If the ax is dull, and one does not sharpen its edge,
then one must exert more strength;
however, the advantage of wisdom is that it brings success.