The Problem of Progress

One of the ablest agnostics of the age once asked me whether I thought mankind grew better or grew worse or remained the same. He was confident that the alternative covered all possibilities. He did not see that it only covered patterns and not pictures; processes and not stories. I asked him whether he thought that Mr. Smith got better or worse or remained exactly the same between the age of thirty and forty. It then seemed to dawn on him that it would rather depend on Mr. Smith; and how he chose to go on. It had never occurred to him that it might depend on how mankind chose to go on; and that its course was not a straight line or an upward or downward curve, but a track line of a man across a valley, going where he liked and stopping where he chose, going into a church or falling down in a ditch.  

-from The Everlasting Man by G.K. Chesterton