for thereunto I applied my mind: that I might know what were wisdom and understanding, what were error and foolishness. And I perceived that this also was but a vexation of mind:

Then turned I me to consider wisdom, error and foolishness: for what is he among men, that might be compared to me the king in such work?

I applied my mind also to knowledge, and to seek out science, wisdom and understanding: to know the foolishness of the ungodly, and the error of doting fools.