Bible Verses About Vanity: Worldly wisdom is

So I said to myself, "If the same thing happens to the fool as to me, then what did I gain by being wise?" and I thought to myself, "This too is pointless.

Here is a man whose work is done with wisdom, knowledge and skill; yet he has to leave it to someone who has put no work into it. This is not only pointless, but a great evil.

and again, “Adonai knows that the thoughts of the wise are worthless.”