In the earlier verses Job talks about all the different places man looks for wisdom. I love the picture he paints in this chapter. To the centre of the earth where miners travel, the depths of the ocean, the wealth of pearls - nowhere can wisdom be found except in the Lord.
I also appreciate that a crucial piece of the formula is that to understand, we must turn from evil. It's not enough to just seek wisdom, we have to turn from evil as well.