The devil's agents may be of flesh and blood, may they not?

Unwelcome truths are not popular.

Is it not? Is it not? Breadth of view, my dear Mr. Mac, is one of the essentials of our profession. The interplay of ideas and the oblique uses of knowledge are often of extraordinary interest.

I think that I may go so far as to say, Watson, that I have not lived wholly in vain, he remarked. "If my record were closed to-night I could still survey it with equanimity. The air of London is the sweeter for my presence."

Dear me, Watson, is it possible that you have not penetrated the fact that the case hangs upon the missing dumb-bell?

Skill is fine, and genius is splendid, but the right contacts are more valuable than either.