Some believe what separates men from animals is our ability to reason. Others say it’s language or romantic love, or opposable thumbs. Living here in this lost world, I’ve come to believe it is more than our biology. What truly makes us human is our unending search, our abiding desire for immortality.

It was easier to know it than to explain why I know it. If you were asked to prove that two and two made four, you might find some difficulty, and yet you are quite sure of the fact.

~ Sherlock Holmes

There are no crimes and no criminals in these days. What is the use of having brains in our profession? I know well that I have it in me to make my name famous. No man lives or has ever lived who has brought the same amount of study and of natural talent to the detection of crime which I have done. And what is the result? There is no crime to detect, or, at most, some bungling villainy with a motive so transparent that even a Scotland Yard official can see through it.

"Really, Watson, you excel yourself," said Holmes, pushing back his chair and lighting a cigarette. "I am bound to say that in all the accounts which you have been so good as to give of my own small achievements you have habitually underrated your own abilities. It may be that you are not yourself luminous, but you are a conductor of light. Some people without possessing genius have a remarkable power of stimulating it. I confess, my dear fellow, that I am very much in your debt."

It is a great thing to start life with a small number of really good books which are your very own. You may not appreciate them at first. You may pine for your novel of crude and unadulterated adventure. You may, and will, give it the preference when you can. But the dull days come, and the rainy days come, and always you are driven to fill up the chinks of your reading with the worthy books which wait so patiently for your notice. And then suddenly, on a day which marks an epoch in your life, you understand the difference. You see, like a flash, how the one stands for nothing, and the other for literature. From that day onwards you may return to your crudities, but at least you do so with some standard of comparison in your mind. You can never be the same as you were before. Then gradually the good thing becomes more dear to you; it builds itself up with your growing mind; it becomes a part of your better self, and so, at last, you can look, as I do now, at the old covers and love them for all that they have meant in the past.

Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the useful ones.

A study in scarlet, eh? Why shouldn't we use a little art jargon? There's the scarlet thread of murder running through the colourless skein of life, and our duty is to unravel it, and isolate it, and expose every inch of it.