“To a great mind, nothing is little.”

“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. A fool takes in all the lumber of every sort that he comes across, so that the knowledge which might be useful to him gets crowded ...

“But it is better to learn wisdom late than never learn it at all.”

“You see, but you do not observe.”

“There is nothing more deceptive than an obvious fact.”

“Mediocrity knows nothing higher than itself; but talent instantly recognizes genius.”

“Work is the best antidote of sorrow, my dear Watson.”

“Crime is common. Logic is rare. Therefore it is upon the logic rather than upon the crime that you should dwell.”

“I never make exceptions. An exception disproves the rule.”

“Where there is no imagination, there is no horror.”

“Education never ends, Watson. It is a series of lessons with the greatest for the last.”