Just happened upon this passage in The Boscombe Valley Mystery
And now here is my pocket Petrarch, and not another word shall I say of this case until we are on the scene of action.
In case you don’t know, Petrarch is an Italian sonneteer, and an important one. I’m delighted to know that Holmes read sonnets. But then, of course he did. Sonnets are cool, and anyone who reads them are cool.
One last note, for those of you interested in the clues about BBC Sherlock’s Season Three, I’d bet money that the “Rat” clue comes from this same story. Read it and look for the clue.
Reading sonnets will make you smarter, guaranteed! (actual results may vary)