Sean Duffy
@profduff.bsky.social
Psychology professor at Rutgers, cyclist, urbanist, photographer from Philadelphia.
Pinned
First time in 381 days that I can say I’m proud to be an American.
February 9, 2026 at 2:52 AM
First time in 381 days that I can say I’m proud to be an American.
Should be shared and reshared, again and again and again
No joke: I got angry hate mail today for writing an obituary of a Black woman scientist—because the person felt she did didn’t deserve the recognition.
Which just makes me want to share it again: www.nature.com/articles/d41...
Which just makes me want to share it again: www.nature.com/articles/d41...
Gladys Mae West obituary: mathematician who pioneered GPS technology
She made key contributions to US cold-war science despite facing huge barriers as a Black woman.
www.nature.com
February 6, 2026 at 11:12 AM
Should be shared and reshared, again and again and again
My lab at Rutgers Camden! 😻
February 4, 2026 at 6:35 PM
My lab at Rutgers Camden! 😻
Spotted this painting by NC Wyeth at the Free Library of Philadelphia museum
January 26, 2026 at 1:24 PM
Spotted this painting by NC Wyeth at the Free Library of Philadelphia museum
The back stage view of a Philly window cats!
This is my daughter’s Philly cat. He loves his window.
January 22, 2026 at 3:25 PM
The back stage view of a Philly window cats!
Some Snow White window cats of South Philadelphia.
January 22, 2026 at 2:16 PM
Some Snow White window cats of South Philadelphia.
Fuck ICE protest, Rutgers Camden 1/20/26.
January 20, 2026 at 7:37 PM
Fuck ICE protest, Rutgers Camden 1/20/26.
And here is a video montage of the view from the PATCO train from Philadelphia to Camden, New Jersey over the four seasons
January 19, 2026 at 12:06 PM
And here is a video montage of the view from the PATCO train from Philadelphia to Camden, New Jersey over the four seasons
People seem to like these pictures of the same location over time: here is a series of Four Seasons of a street in South Philadelphia (Lombard and Jessup)
January 19, 2026 at 12:02 PM
People seem to like these pictures of the same location over time: here is a series of Four Seasons of a street in South Philadelphia (Lombard and Jessup)
What a difference 3 months makes!
January 19, 2026 at 5:49 AM
What a difference 3 months makes!
This is a piece I wrote for carillon (cathedral bells) this past summer in Paris. Its opening is based on the peal of bells at Sacre Coeur that @chrisinparis.bsky.social might recognize (thus the French title) but I was really thinking about the end of an era in history…
youtu.be/D_UbAt_KkC8?...
youtu.be/D_UbAt_KkC8?...
Élégie pour l'époque by Sean Duffy
YouTube video by Sean Duffy
youtu.be
January 19, 2026 at 5:08 AM
This is a piece I wrote for carillon (cathedral bells) this past summer in Paris. Its opening is based on the peal of bells at Sacre Coeur that @chrisinparis.bsky.social might recognize (thus the French title) but I was really thinking about the end of an era in history…
youtu.be/D_UbAt_KkC8?...
youtu.be/D_UbAt_KkC8?...
The sunset off the septa line in Philly always hits hard
January 13, 2026 at 11:41 AM
The sunset off the septa line in Philly always hits hard
Walked through Philadelphia’s Italian Market today after a long absence. Great to see old faces and new places! But sad that some mainstays gone too. Still think it’s the best street in Philly 😻
January 9, 2026 at 5:23 PM
Walked through Philadelphia’s Italian Market today after a long absence. Great to see old faces and new places! But sad that some mainstays gone too. Still think it’s the best street in Philly 😻
Every station needs a cat station master! Why are the Japanese always ahead of us?
January 9, 2026 at 1:02 PM
Every station needs a cat station master! Why are the Japanese always ahead of us?
Would have gone except I was out of town. Will go to the next…
Philadelphia in candlelight.
A city paused.
Love showed up for Renee Nicole Good.
A city paused.
Love showed up for Renee Nicole Good.
January 9, 2026 at 3:15 AM
Would have gone except I was out of town. Will go to the next…
Was in Philadelphia city hall today…such a gorgeous building in the best country in America! (we often talk about Philadelphia being its own separate country in light of recent events…)
January 5, 2026 at 4:54 PM
Was in Philadelphia city hall today…such a gorgeous building in the best country in America! (we often talk about Philadelphia being its own separate country in light of recent events…)
Every NYE there is a Twilight Zone marathon on TV and I think I’m going to propose a course at Rutgers where we just watch episodes of the Twilight Zone and do readings based on them. I mean it covers almost all of human psychology! Maybe this year I just should go for it…
January 1, 2026 at 5:36 PM
Every NYE there is a Twilight Zone marathon on TV and I think I’m going to propose a course at Rutgers where we just watch episodes of the Twilight Zone and do readings based on them. I mean it covers almost all of human psychology! Maybe this year I just should go for it…
Me playing a Christmas carol (an arrangement of In Dulci Jubilo) on the Rockefeller carillon at the University of Chicago. At 105 tons, it is the largest musical instrument ever built. Have a happy holiday!
December 25, 2025 at 2:11 PM
Me playing a Christmas carol (an arrangement of In Dulci Jubilo) on the Rockefeller carillon at the University of Chicago. At 105 tons, it is the largest musical instrument ever built. Have a happy holiday!
Christmas Eve Feast of seven fishes here in Philly. It’s an Italian American thing with origins in southern Italy. We substitutes sushi for bacala because no one in my family likes salted cod! But we had salmon, flounder, crab, clam, scallop, and shrimp.
December 25, 2025 at 2:07 PM
Christmas Eve Feast of seven fishes here in Philly. It’s an Italian American thing with origins in southern Italy. We substitutes sushi for bacala because no one in my family likes salted cod! But we had salmon, flounder, crab, clam, scallop, and shrimp.
City Hall in Philly has a carousel you can see in the center of the courtyard
November 30, 2025 at 1:33 AM
City Hall in Philly has a carousel you can see in the center of the courtyard
Philadelphia today - still beautiful late in autumn in Rittenhouse square. The last image is of the Comcast center - its architect Robert AM Stern died earlier this week
November 30, 2025 at 1:31 AM
Philadelphia today - still beautiful late in autumn in Rittenhouse square. The last image is of the Comcast center - its architect Robert AM Stern died earlier this week
There is beauty everywhere but especially in autumn in Philadelphia! 😻
November 24, 2025 at 5:32 PM
There is beauty everywhere but especially in autumn in Philadelphia! 😻