Some biographies take the form of a memorial. Marie-Luise Conen and Zdravko Kucinar have erected a memorial for the researcher, author and Social Demokrat “Milian Schömann” from the “Moselle” region near Traben-Trarbach and Lösnich. The biography reads like a narrative of crimes, which goes without punishment, before and during the Nazi-terror and the power grip in rural areas in the late 1920s and early 1930s. Milian Schömann achieved his university entry qualification A-levels in Traben-Trarbach before he moved on to study German literature and philosophy in Heidelberg, Bonn and Berlin.
His studies and political engagement were driven by a humanist approach and his letters and publications as literary critic as well as his contributions to philosophy are partly reproduced in this biographical account. This allows to follow in the footsteps of the curious and open-minded person of Jewish descent. As a contributor and speaker at meetings of SPD-members and associated political movements, he risked and eventually lost his life for his humanitarian convictions in 1942 near Belgrade.
It is the merit of Marie-Luise Conen and Zdravko Kucinar to let Milian Schömann live on in our time through the reprinting of some of his work, which is embedded in a well-written historical account of the political and family setting at that time. The professional psychological training of Marie-Luise Conen helps to reproduce the anxious atmosphere Milian Schömann has lived through, albeit he remained a productive writer despite the economic hardship and living in exile.
This biography accomplishes in a rather unique way to enter into the mind and thinking of the author Milian following his very personal perspective on the “history of ideas” and inner call to action. Similar to the appreciation of Viktor Ullmann in the Jewish Museum in Berlin, where the music of the composer lives on after his death, the writings of Milian Schömann survived extinction, despite that he was murdered. After more than 80 years we still feel the loss of potential other contributions to philosophy and literary studies. The recognition extends to Milian’s academic and personal mentors Oskar Walzel and Arthur Liebert, important sources to understand the reasoning and motivation of Milian.
(Image: Extract from Marie-Luise Conen and Zdravko Kucinar (2024) Milian Schömann, Paulinus Verlag, Trier, p. 139) 
Beyond ART
Is there anything beyond art? Well, maybe there is. ART in German language is an abbreviation of “Allgemeine RelativitätsTheorie”. In other words the General theory of relativity developed by Albert Einstein is in its shortest form a one line mathematical expression, but with lots of equations included in the general statement, which grew out of his much earlier special theory of relativity. The textbook by Michael Ruhrländer provides a step by step approach to get to grips with the mathematics involved to reach a better understanding of what “ART” is about. Take your time to digest it and brush up a lot of maths beyond your A-level maths.
The abbreviation ART suggests a lint to art in popular understanding. Indeed, it needs able artists to show insights of ART to more people than the restricted scientific circles. An understanding of a 4-dimensional system of time-space has some more accessible features than waves of gravitation and the many puzzles that can be solved through ART.
Decades later quantification has build upon ART and takes us further into fabulous world of mathematical and physical imagination as well as real world applications. 
Wave and Particle
The history of ideas in physics has been evolving or revolving a lot around the wave-particle-duality. Even if the basic debate by now is about a century old, we still need to come to grips with this challenging notion that light is not just a beam and nice colors through a prism yielding a spectrum of frequencies, but it can emit material matter called photons that have a non-zero value(s) of energy.
Max Planck came up with the formula E = h × f, where h is the Planck constant, E the energy and f the frequency of the photon. The synthesis of Einstein’s light quanta and De Broglie’s matter waves became the foundation of quantum mechanics.
The exciting evolution of physical ideas results in the state of the “art” view that, for example, light can take both forms, wave and particle, at the same time. Quantum mechanics has become a thriving field in physics and is currently transforming the world of computing in the 21st century. The amounts of funds invested in the race of applications of quantum computing across the globe are “astronomic” and have become part of dual-use spending of research funding. Encryption of information or access codes are of growing importance for civil (banking, mobility, health info) or military purposes. The speed of quantum processors will allow cracking of codes much faster and therefore new dangers are looming in many fields. It is a rather competitive field, which has evolved a lot from the original wave and/or particle vision of the world (of physics).
For social scientists there are several examples of applications of the concepts of quantum mechanics to social and behavioral sciences (Link 1, Link 2). Hard to predict, whether the wave and/or particle view will dominate the social applications of elements of the history of ideas in physics. New concepts in science challenge our traditional science-based thinking about time, space and space-time with implications even for our understanding of causality and covariance.
(Image of Dice icoshahedron (animated 3D image) from Egypt, dated to 2nd century before our time, BNF, Paris) 
Negative time
In 2025 an experimental setting has come up with a demonstration of negative time. This is a mind-blowing mental exercise to imagine the science fiction like framework to allow time to be negative as well.
This invites several epistemological questions as well. Can we imagine or live with a reversible concept of time? Maybe music has given us clues. In composition of music, we can easily play the notes of a basic theme just in reverse or mirrored order. Modern rhythms like in beat music as accompaniment by a drum use for example a rhythm like (use your hands or drum sticks!)
“left left right left /
right right left right”, (redo faster if you internalized the rhythm).
A reversal of the beat (its inversion) like replays of rhythms in reverse order seem to return the energy. This beat pattern is perceived as forward moving and is advancing in chronological time. It has fascinated a whole generation and spurred crazy movements to accompany the rhythm.
A simple tune might be played in reverse order as well. Just take a piano scale and play 1 2 3 1 fingers, and then 1 3 2 1 in a mirrored fashion (1231 1321). Even 1 2 3 1 as 3 2 1 3 gives an impression of inversion. Through this composition technique you get a bit of a feeling for the potential of a reversal of time or what negative time might feel like.
The innovation through quantification challenges our concepts of time more and more. The direction of time is subject of a fundamental revision. Theoretical concepts have predicted this for a long time.
(Image: Muséum national d’Histoire naturelle, Paris)
Quantification
The most obvious association with quantification is the attempt to quantify in the sense of measurement of situations, locations or social phenomena. This has taken considerable steps with the availability of smartphones that measure and thereby quantify all sorts of wanted and unwanted information about us. The distances walked are among the easiest to quantify. There have been many accounts and discussions about this kind of quantification. The results have been a further push towards self-optimization assisted by a quantification of almost all aspects of life. That is daily business of social sciences.
Quantification has another well-defined meaning to it, which is in physics. The revolution of the early 20th century has been to deviate from classical physics which assumed continuous processes in time and continuous measurements to the new world of quantum physics, another kind of quantification. This allusion is due to the Alain Aspect’s inspiring book “Si Einstein avait su” (2025) and his efforts to make quantum physics understood to a broader public. For me one of the merits of the book is the reminder that experimental physics can contribute and resolve many epistemological questions.
(Image: my popularized approximation of Schrödinger’s cat in Berlin Zoo)
Time Concepts
Tell me about your concept of time. How do you define time? Answers to this question are likely to depend on your upbringing, affinity to a specific scientific discipline or epistemological belief(s). Aristotle defines time to be subordinate to the more basic principle of change. To understand change we need the concept of time. Two points in time define time, intermediate points are possible, which might be interpreted as a precursor of infinitesimally short spells of time. To explain change, Aristotle refers to his concept of time. Other concepts of time build on the notion of succession of events or sequences of events.
Clocks going round in circles have been used to show the progression of time independent of events. Beams of atoms later allowed for more precision of time keeping. The prevalent concept of time still is dominated by the idea of time as an arrow, usually depicted in some diagram resemblance based on the Cartesian coordinate system, but usually starting at 0 or a particular point in time as diagrams in economics.
Following on from the old concept of change and time, we still claim for causality in most day-to-day experiences or for social processes the link to a chronological progression of time. In statistical analyses building on time-stamped occurrences we may use event history analyses or stochastic differential equations to analyze (social) change depending on one or several (earlier) factors. Even the theory of deterministic chaos, which is applied in weather forecasts for example, arises from the sequence of point of measurements.
Mainly since Isaac Newton we cherish the notion of a universal time, which helps us to coordinate different locations on our planet with reference to the Greenwich mean time. Other concepts of time make use of infinity of time and how to deal with this. Life before, or life after death, are human constructs trying to make time understandable or at least manageable for us beyond our own living time. Depictions of time in the arts, paintings or music opens up yet another vast space of thinking about, as well as, experiencing time. We did have and still do have a great time thinking about time. 
Endless Questions
The winner of the Niépce prize 2024 has been awarded to Anne-Lise Broyer and features prominently at the BNF in Paris. The exhibition of the professional photographer reflects by way of photographic “still images” on the historic fate of the mediterranean basin. Each and every image has no answers, but keeps posing questions. In the long alley of the BNF in honor of Julien Cain, we walk through history of more than 2 thousand years in photographs up until today and even beyond. Let’s keep asking the most fundamental questions again and again. The exhibition entitled “Est-ce-là que l’on habitait ?” invites us to ask ourselves about the historic origins of so-called Western culture in the mediterranean basin. Ancient philosophy and arts are the foundations even of our current ideas of democracy and freedom.
However, what has become of this in the 21st century? The original statue of freedom has suffered badly. What has become of the freedom of mobility at a time of barbed wire fences rising between countries that influences each other over thousands of years? How about nature? How about religion and freedom of expression? Where is progress? Where is regression?
For centuries we have sought answers in libraries starting from the Library of Alexandria to the treasures of art and knowledge of today across the world. Let’s make more intensive use of these treasures where we shall find answers to most of our questions of the past, to the past and of future interest.
Text to Image
Long before everybody started to discuss Artificial Intelligence, which in many applications takes the form of transformation of a textual prompt into an Image, Photographers have had literature or quotations in their mind that shaped their images. This was a kind of poetic imagery not always easy to recognize. The exhibition in the „Institut de France“, Bibliothèques Mazarine (LINK), with photographs by Nicolas Fève (LINK) offfers a great insight into this way to conceive of an image and its realization through photography. Exposing the sources of inspiration as well as the photo is like adding textual citations to an image in a much more inspirational and transforming manner than AI is doing these days in 2025.
Text to image is only one out of the many ways texts might guide imagination, but it is a powerful and gripping one. The history of literature is full of other forms like videos based on novels, comic strips to make classic texts in Latin more accessible. As we shall ask AI products like texts and images to cite their sources and honor authorship, photography as art and science might enhance the literary experience by adding citations to an image. This has the additional advantage that more people will follow up on the sources of inspiration. 
Existence as Eggsistence
Artists have their own ways of hallucinating. They don’t need an AI to generate ideas beyond the normal, even allowing for 2 standard deviations off the usual. As a result of the thorny question about your existence, Ram Katzir came up with the impressive statement about his „eggsistence“ being subjected to a squeezed experience. Ever increasing shares of the labor force would subscribe to this statement about the modern workplace. Each turn of the screw risks to crack up the egg‘s shell. Rather focus on the egg, try to get a grip on the screw. There are thousands if not millions who crack up under the excessive pressure of economic and political circumstances. The new platforms of food, grocery and parcel delivery at home have become the latest example of AI-assisted and algorithmicly managed screws. What is driving your eggsistence. It is about time to ask fundamental questions again. (Image: Eggsistence, by Ram Katzir 2021 in Brussels, Galilas Collection Belgium) 
Question Tomorrow
« Tomorrow is the question ». This is the imprint on the 8 table tennis tables in the Martin Gropius Bau 2024. As part of the Contemporary art exhibition by the artist Rirkrit Tiravanija, the tables are very busy throughout the day and invite people to meet, play and greet. If tomorrow is the question, today is the answer. Is it? Maybe the answer is the day after tomorrow? Time appears to be the answer and the question. Such questions touch on basic philosophical questions about our relationship to and concept of time. Future orientation or even the belief in life after death touch upon basic religious beliefs. Intergenerational transmission is useless if there is no tomorrow or concept of tomorrow. Sustainability is most relevant if we are convinced there will be a tomorrow. Fatalists or warmongers rate today so much more than tomorrow that everything is subordinated to the urgency of now. Not easy to strike the right balance between „for now“ and „for tomorrow“. Simple financial discounting of benefits which accrue only tomorrow do not solve the urgency issue of behavioral concerns. My personal discounted value of ice cream tomorrow might be superior to ice cream now, but it is based on the tacit assumption that the shop still exists tomorrow or any other time in the future. The exhibition invites people not only to play table tennis but also to discuss the question of tomorrow across language barriers and across tables and cultures. 