Chapter 46

Mr. Robinson smiled even more gently. "As a scientist, dear brother, you should know the tiny dividing line between sanity and madness. One little link wrong in that marvellous mechanism of the brain, and the greatest thinker becomes but a babbling fool. Not that his best friends could ever have called poor Drummond a great thinker, but"--he paused to emphasise his words--"but, dear brother, he serves as a very good example of what might happen to one who is a great thinker." Professor Goodman shivered; there had…