“The thing about smart people is that they seem like crazy people to dumb people” is a saying that has been printed on many images.
   
“The thing about smart people is that they seem like crazy people to dumb people” was posted on Twitter by JFK-he-say on November 4, 2011. “RT @teedubya The thing about smart people is that they seem like crazy people to dumb people” was posted on Twitter by Donnybrook Rhoades (and others) on November 4, 2011. The @teedubya tweet is no longer available, but it’s possible that this is the source of the quotation.
   
“‘The thing about smart people is that they seem like crazy people to dumb people.’ ― Stephen Hawking” was posted on Twitter by Goddess on October 7, 2013. There is no evidence that English theoretical physicist, cosmologist, and author Stephen Hawking (1942-2018) originated the saying, or even said it.
 
     
Twitter
JFK-he-say
@SecularAdvocate
The thing about smart people is that they seem like crazy people to dumb people.
5:44 AM · Nov 4, 2011·Twitter Web Client
   
Twitter
Donnybrook Rhoades
@TheGonzoSEO
Replying to @teedubya
RT @teedubya The thing about smart people is that they seem like crazy people to dumb people.
10:35 AM · Nov 4, 2011·Twitter Web Client
   
Twitter
A Jangbrand
@j4ngis
😊  Very true! RT @teedubya: The thing about smart people is that they seem like crazy people to dumb people.
10:41 AM · Nov 4, 2011·TweetDeck
   
Twitter
Carri Bright
@BrightGirl
I love this SO much! RT @teedubya: The thing about smart people is that they seem like crazy people to dumb people.
11:05 AM · Nov 4, 2011·Hootsuite
   
Twitter
Stephane Achille
@Stephaneachille
“The thing about smart people is that they seem like crazy people to dumb people”
—Unknown author
3:41 PM · Nov 5, 2011·Facebook
   
Twitter
Emanuel Erazo
@e_erazo
The thing about smart people is that they seem like crazy people to dumb people.
(This is also shown on an image.—ed.)
6:38 PM · Nov 10, 2011·Twitter Web Client
 
Twitter 
Michael
@OrmeArt
The thing about smart people is that they seem like crazy people to dumb people.
(This saying is also shown on an image.—ed.)
11:40 PM · Jun 10, 2012·Photos on iOS
 
Google Books 
Unnatural Acts:
Critical Thinking, Skepticism, and Science Exposed!
By Robert Carroll
Published by author
2012
Pg. 138:
One commenter posted the following: “The thing about smart people is that they seem like crazy people to dumb people.” True and dumb people seem like dumb people to just about everybody except other dumb people.
     
Twitter
Goddess
@mairynrefe
“The thing about smart people is that they seem like crazy people to dumb people.” ― Stephen Hawking
6:35 PM · Oct 7, 2013·Twitter for iPhone
 
Twitter
Jackson David Reynolds, MD
@ReynoldsJackson
“The thing about smart people is that they seem like crazy people to dumb people.” – Stephen Hawking
7:02 PM · Apr 13, 2014 from Calhoun, GA·OS X
   
Twitter
Urooj Hussein
@UroojHussein
“The thing about smart people is that they seem like crazy people to dumb people.”  ― Stephen Hawking
8:33 AM · Apr 15, 2014·Twitter Web Client
 
Reddit—Quotes
Posted by u/sandbour September 1, 2018
“The thing about smart people is that they seem like crazy people to dumb people.” – Stephen Hawking i think i’m crazy!
Not Stephen Hawking
     
Inc.
January 1, 2020
366 Top Inspirational Quotes and Motivational Quotes for Every Single Day in 2020For 2020, a brand new list of the best quotes of all time, one for each day of the year.
BY BILL MURPHY JR., http://www.billmurphyjr.com @BILLMURPHYJR
(...)
Thursday, January 2, 2020
“The thing about smart people is that they seem like crazy people to dumb people.”
—Stephen Hawking
 
Twitter
Richard Cooper
@Rich_Cooper
The thing about smart people is that they seem like crazy people to dumb people.
10:00 AM · Jun 12, 2021·Hypefury
 
Twitter
wisdom nectar
@wectar
The thing about smart people is that they seem like crazy people to dumb people. — Stephen Hawking
(This is also shown on an image.—ed.)
2:41 PM · Mar 22, 2022·Buffer