last talked castle is now owned by Solvay family "When Prince Philippe died in 1905, his three children inherited the castle and sold it to the Liège wood merchant Robert Colette for 7 million francs. He cut down practically all the trees and resold the property three years later to Alice Solvay, the niece of Ernest Solvay. Today, the estate still belongs to his descendants."
https://en.wikipedia.org/wiki/Ernest_Solvay "was a Belgian chemist, industrialist and philanthropist." noticed? they're always "philanthropist" no they're the exact opposite. Just like Bill and Melinda Gates...

"Solvay process plants were established in the United Kingdom, the United States, Germany and Austria. Today, about 70 Solvay process plants are still operational worldwide." "Institute for Sociology at the Free University of Brussels (now split into the Université Libre de Bruxelles and the Vrije Universiteit Brussel), as well as International Institutes for Physics and Chemistry. In 1903, he founded the Solvay Business School which is also part of the Free University of Brussels. In 1911, he began a series of important conferences in physics, known as the Solvay Conferences, whose participants included luminaries such as Max Planck, Ernest Rutherford, Maria Skłodowska-Curie, Henri Poincaré, and (then only 32 years old) Albert Einstein. A later conference would include Niels Bohr, Werner Heisenberg, Max Born, and Erwin Schrödinger.

He was twice elected to the Belgian Senate for the Liberal Party and granted honorary title of Minister of State at the end of his life. Solvay, New York and Rosignano Solvay, the locations of the first Solvay process plants in the United States and in Italy, are also named after him."
https://www.cambridge.org/core/books/solvay/pioneering-years-18631914/5CB868466DA4DE5E9F4F07DF1A936A2B

https://en.wikipedia.org/wiki/Solvay_Institute_of_Sociology

Energetics and general biology in their relations with sociology [Energétique et biologie générale dans leurs rapports avec la Sociologie]

Ethology of interindividual relations among living beings other than humans [Ethologie des rapports interindividuels chez les êtres vivants autres que les hommes]

Human and comparative physiology and psychology in their relations to sociology [Physiologie et psychologie humaines et comparées dans leurs rapports avec la Sociologie]

Human Sociology