You cannot imagine what a terrible fellow he is when he is angry.
 Arthur Conan Doyle, The Sign of the Four (1890). copy citation

add
Author Arthur Conan Doyle
Source The Sign of the Four
Topic
Date 1890
Language English
Reference
Note
Weblink http://www.gutenberg.org/files/2097/2097-h/2097-h.htm

Context

““for we shall certainly have to go to Norwood and see Brother Bartholomew. We shall all go and try if we can get the better of Brother Bartholomew. He is very angry with me for taking the course which has seemed right to me. I had quite high words with him last night. You cannot imagine what a terrible fellow he is when he is angry.” “If we are to go to Norwood it would perhaps be as well to start at once,” I ventured to remark. He laughed until his ears were quite red. “That would hardly do,” he cried. “I don’t know what he would say if I brought you in that sudden way.” source