The Idiot Part 1 Chapter 7 Page 41

Gania having once descended to abuse, and receiving no check, very soon knew no bounds or limit to his licence, as is often the way in such cases. His rage so blinded him that he had not even been able to detect that this “idiot,” whom he was abusing to such an extent, was very far from being slow of comprehension, and had a way of taking in an impression, and afterwards giving it out again, which was very un-idiotic indeed. But something a little unforeseen now occurred.

“I think I ought to tell you, Gavrila Ardalionovitch,” said the prince, suddenly, “that though I once was so ill that I really was little better than an idiot, yet now I am almost recovered, and that, therefore, it is not altogether pleasant to be called an idiot to my face.