Never trust to general impressions, my boy, but concentrate yourself upon details.

What a lovely thing a rose is!

It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth.

There are always some lunatics about. It would be a dull world without them.

Dogmas of every kind put assertion in the place of reason and give rise to more contention, bitterness, and want of charity than any other influence in human affairs.

Only that I insist upon your dining with us. It will be ready in half an hour. I have oysters and a brace of grouse, with something a little choice in white wines. Watson, you have never yet recognized my merits as a housekeeper. ~ Sherlock Holmes

Anything seems commonplace, once explained.