Bible Verses About Vanity: Worldly wisdom is

and I said in my heart, `As it happeneth with the fool, it happeneth also with me, and why am I then more wise?' And I spake in my heart, that also this is vanity:

For there is a man whose labour is in wisdom, and in knowledge, and in equity, and to a man who hath not laboured therein he giveth it--his portion! Even this is vanity and a great evil.

and again, `The Lord doth know the reasonings of the wise, that they are vain.'