Maurice van Steensel 🇺🇦 🇳🇱 🇸🇬🏳️‍🌈
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4dmanifold.bsky.social
Maurice van Steensel 🇺🇦 🇳🇱 🇸🇬🏳️‍🌈
@4dmanifold.bsky.social
390 followers 940 following 2.9K posts
MD PhD dermatologist/scientist, love books, cats and kyokushin karate. Professor of dermatology and skin biology. I dabble in paleontology and topology. I founded a biotech company that makes recombinant phage lysins. I game on Linux. I’m a geek.
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4dmanifold.bsky.social
Dear sir

I beg to differ.
A young ginger tomcat contemplating. He’s very cute with face that looks like that of a red panda. His chin is resting on his paws. To his right there is an orchid.
November 25, 2025 at 1:23 AM
4dmanifold.bsky.social
When you’re really out of things to do
A young ginger tomcat lying on a ledge with his chin resting on his front paws, contemplating
November 24, 2025 at 1:04 PM
4dmanifold.bsky.social
Sand is the best
A little ginger tomcat chilling in the sand
November 6, 2025 at 11:47 PM
4dmanifold.bsky.social
Two cute ginger tomcat kittens lying on the pavement. They are brothers, and very close. Both are very fluffy and eager for tummy rubs.
November 5, 2025 at 7:11 AM
4dmanifold.bsky.social
2 nazi judges and an SA officer standing in front of a swastika banner giving the Nazi salute
September 25, 2025 at 11:39 PM
4dmanifold.bsky.social
Science. It works, bitches (showing a graph of the frequency distribution of cosmic background radiation)
September 24, 2025 at 2:27 PM
4dmanifold.bsky.social
This is Lilly-in-the-fields
A grey and white cat with big golden eyes looks into the camera
August 21, 2025 at 3:27 AM
4dmanifold.bsky.social
Yup definitely ready to replace business consultants.
Asking GPT5 to draw an airplane using ascii art. It fails abysmally.
August 9, 2025 at 3:00 AM
4dmanifold.bsky.social
Kitten beans. Nothing beats kitten beans.
Kitten beans
July 23, 2025 at 9:07 AM
4dmanifold.bsky.social
Hitler and Goebbels smiling just like Trump and DeSantis
July 2, 2025 at 6:10 AM
4dmanifold.bsky.social
Sometimes happiness comes in a box.
Our cat Yasmin with her 4 newborn babies (Yasmin is a fluffy sealpoint between a Persian and a something. )
June 19, 2025 at 4:21 PM
4dmanifold.bsky.social
It’s the thought that counts (Brussels, Belgium) #Ukraine
A blue and yellow barrier on which the word “Ukaine” has been spray painted
May 30, 2025 at 4:04 AM
4dmanifold.bsky.social
This beauty visited my garden today. Can someone tell me what species this is? #spider
A very cute beige furry jumping spider clinging to a leaf
May 16, 2025 at 5:59 AM
4dmanifold.bsky.social
Bean time
The underside of a cat’s paw showing cute yummy beans
April 23, 2025 at 11:19 AM
4dmanifold.bsky.social
RGB mood lighting turns the workplace into a cozy sanctuary
My home office showing off RGB mood Lighting, and the matching RGB on my Razer peripherals.
March 5, 2025 at 2:13 PM
4dmanifold.bsky.social
Whoopsie.
Screen capture showing an error message saying that www.ncbi.nlm.nih.gov cannot be found
March 2, 2025 at 11:51 AM
4dmanifold.bsky.social
Chill but awake
A young cat lying on a leather chair in the classic loaf position.
December 16, 2024 at 1:04 PM
4dmanifold.bsky.social
Just had to share this work of art I bought today for special occasions. Handmade Surakarta batik shirt, one-off pattern!
A beautiful handmade batik shirt with facing gold dragons with red lining embroidered / dyed on a black background.
December 10, 2024 at 12:30 PM
4dmanifold.bsky.social
Loafing
2 kittens loafing on a chair
December 1, 2024 at 4:41 AM
4dmanifold.bsky.social
2 kittens sleeping on a couch. One has buried his face in the other’s fur and is on his back.
November 26, 2024 at 12:32 PM
4dmanifold.bsky.social
Argiope appensa, if my amateur identification checks out. Off my pond deck in Yogyakarta, Indonesia.

How to italicize I wonder.
A spider in her web, this one has bright yellow markings on a somewhat rhomboid body. Identified as Argiope appensa (a banana spider)
November 25, 2024 at 2:50 AM
4dmanifold.bsky.social
Finally time to relax, back in Yogyakarta.
A kitten lying on her side on a pillow.
November 23, 2024 at 5:57 AM
4dmanifold.bsky.social
Ringworld by Larry Niven
November 21, 2024 at 11:06 PM
4dmanifold.bsky.social
Good morning all cat lovers
A cat in a cat condo, her face seen through a cat head-shaped outline
November 20, 2024 at 11:32 PM
4dmanifold.bsky.social
Tractatus logico-philosophicus by Wittgenstein
November 20, 2024 at 3:34 PM