There may be some variation upon this in the trial of Laura Hawkins in THE GILDED AGE or in PUDD’NHEAD, but this sounds to me like the lines from CHRISTIAN SCIENCE:

“We know exactly where to put our finger upon his insanity: it is where his opinion differs from ours…The rule is perfect: in all matters of opinion our adversaries are insane.” (Chapter V)
  

> On Jan 23, 2017, at 2:31 PM, Alan Kitty <[log in to unmask]> wrote:
> 
> What about the courtroom scene in Colonel Sellers?  I don't recall if that s=
> cene also appeared in Gilded Age. These references assume of course that a "=
> book" also might include a play.
> 
> Sent from my iPhone
> 
>> On Jan 23, 2017, at 1:50 PM, JULES AUSTIN HOJNOWSKI <[log in to unmask]> wr=
> ote:
>> =20
>> The only book I can think of that had a court in it is the c. yankee one
>> And I brought up the text or that book on my computer and did a search and=
> =3D
>> that phrase does not come up in that book.  I do not recall any of his oth=
> e=3D
>> r works have a court scene in it.
>> =20
>> I am not sure that he wrote it. But I could be mistaken ;)
>> =20
>> Good luck.
>> Jules
>> =20
>> -----Original Message-----
>> From: Mark Twain Forum [mailto:[log in to unmask]] On Behalf Of Allen Brafma=
> n
>> Sent: Monday, January 23, 2017 12:12 PM
>> To: [log in to unmask]
>> Subject: a question regarding intelligence
>> =20
>> someone please remind me in which of Twain's work is the court scene where=
> =3D
>> the narrative voice says something along the following lines:
>> =20
>> =20
>> a person considers another person intelligent if that other person says so=
> m=3D
>> ething that is in agreement with the first person's own thinking
>> =20
>> =20
>> I thank you all in advance for your attention to this
>> =20
>> =20
>> Allen Brafman