Even the best of us are thrown off some- times. - Arthur Conan Doyle

"You say that your fare told you that he was a detective?"
"Yes, he did."
"When did he say this?"
"When he left me."
"Did he say anything more?"
"He mentioned his name."
Holmes cast a swift glance of triumph at me.
"Oh, he mentioned his name, did he? That was imprudent. What was the name that he mentioned?"
“His name," said the cabman, "was Mr. Sherlock Holmes.

"From a drop of water," said the writer, "a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other. So all life is a great chain, the nature of which is known whenever we are shown a single link of it."

By a man's finger-nails, by his coat-sleeve, by his boots, by his trouser-knees, by the callosities of his forefinger and thumb, by his expression, by his shirt-cuff — By each of these things a man's calling is plainly revealed. That all united should fail to enlighten the competent inquirer in any case is almost inconceivable. You know that a conjurer gets no credit when once he has explained his trick; and if I show you too much of my method of working, you will come to the conclusion that I am a very ordinary individual after all.