The Futility of Wisdom

I discipline my mind with wisdom, and consider all things that have been done under heaven by men. It is a miserable contemplation that God has given the sons of mankind to trouble themselves with. I have seen all the works which have been done under the sun, and behold, all is vain futility... like chasing the wind. What is crooked cannot be straightened, and what is diminished cannot be counted as righteousness.