"Mr McRitchie," said he one day abruptly to him, "I daresay that you think me a young jackanapes, whose only thought is how he can do most harm in the world.  Now, sir, you are mistaken; all I want is that you will impart some of your knowledge to Harry and me; but, understand, whether you do that or not, Harry and I will make it a point of honour not to do you any injury by word, look, or deed."