A Study In Scarlet

It is a capital mistake to theorize before you have all the evidence. It biases the judgment.”

kith nor kin

“I consider that a man’s brain originally is like a little empty attic, and you have to stock it with such furniture as you choose.

you can unravel some knot

“you should never neglect a chance, however small it may seem.”

“I had no idea that you noticed that,”

It was rare for him to be up after ten at night

He appears to have a passion for definite and exact knowledge.”

Heaven knows what the objects of his studies are.

has amassed a lot of out-of-the-way knowledge which would astonish his professors.”