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

Mediocrity knows nothing higher than itself, but talent instantly recognizes genius.

No man burdens his mind with small matters unless he has some very good reason for doing so.

To a great mind, nothing is little,' remarked Holmes, sententiously.

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

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