I have already explained to you that what is out of the common is usually a guide rather than a hindrance.

I have wrought my simple plan If I give one hour of joy To the boy who’s half a man, Or the man who’s half a boy.

Do you know anything on earth which has not a dangerous side if it is mishandled and exaggerated?

Violence does, in truth, recoil upon the violent, and the schemer falls into the pit which he digs for another.

That which is clearly known hath less terror than that which is but hinted at and guessed.

An absence of antecedents and of relatives is sometimes an aid rather than an impediment to social advancement . . .

I rose to go, but Holmes caught me by my wrist and pushed me back into my chair. 'It is both, or none,' said he. 'You may say before this gentleman anything which you may say to me.