As usefulness is generally counted, no one can be more useless.
 Samuel Butler, The Note-Books of Samuel Butler (1912). copy citation

Context

“My Grandfather and Myself My grandfather worked very hard all his life, and was making money all the time until he became a bishop. I have worked very hard all my life, but have never been able to earn money. As usefulness is generally counted, no one can be more useless. This I believe to be largely due to the public-school and university teaching through which my grandfather made his money. Yes, but then if he is largely responsible for that which has made me useless, has he not also left me the hardly-won money which makes my uselessness sufficiently agreeable to myself?” source