There are men that it weakens one to talk with an hour more than a day’s fasting would do.
 Oliver Wendell Holmes Sr., The Autocrat of the Breakfast-Table (1858). copy citation

Context

“The reader will of course understand the precise amount of seasoning which must be added to it before he adopts it as one of the axioms of his life. The speaker disclaims all responsibility for its abuse in incompetent hands.] This business of conversation is a very serious matter. There are men that it weakens one to talk with an hour more than a day’s fasting would do. Mark this that I am going to say, for it is as good as a working professional man’s advice, and costs you nothing: It is better to lose a pint of blood from your veins than to have a nerve tapped. Nobody measures your nervous force as it runs away, nor bandages your brain and marrow after the operation.” source