With his book
Het menselijk liberalisme (
Human Liberalism), Verhofstadt inspires politicians in Belgian liberal parties, as well as in the Dutch parties
People's Party for Freedom and Democracy and
Democrats 66. He defends liberalism against attacks by
anti-globalists, stating that liberalism implies/should imply
solidarity and that
green politics is not contradictory to liberalism. He wrote the books
Pleidooi voor het individualisme (
A Plea for Individualism) and
De derde feministische golf (
The Third Feminist Wave), much of it focusing on
Islamic feminism and its impact in Europe. This book contains exclusive interviews with
Ayaan Hirsi Ali,
Irshad Manji,
Naima El Bezaz, , , and
Yasmine Allas. On 26 September 2008, Verhofstadt released his new book
Pius XII and the Extermination of the Jews in the Dutch language. In this book, he examines the position of Pacelli, the later
Pope Pius XII, towards
Adolf Hitler’s seizure of power, the downfall of the Catholic
Centre Party, the
Reichskonkordat between Nazi Germany and the
Holy See, the encyclical
Mit brennender Sorge (
With Burning Concern),
paganism, the
Nazi education programs, the
Aktion 74 (the murder of physically and mentally handicapped persons), the
invasion of Poland,
Operation Barbarossa, the
Jews in the Netherlands, priest-president
Jozef Tiso of
Slovakia, the
Ustaše in the
Independent State of Croatia, the
deportation of Jews from Rome, the
Holocaust in Hungary, the help offered to
war criminals, the
resistance against Nazism, the alleged refusal of the Church to "give back Jewish" children who had been in hiding, the failures of the
Allies, alleged
antisemitism after the Holocaust, and the moral question of alleged guilt of the Church and the pope. In November 2019, Verhofstadt published the book
Ide Leib Kartuz. Tailor in Auschwitz with David Van Turnhout as co-author. In July 2022, the English version (
A Tailor in Auschwitz) was published by Pen & Sword Books. In 2021, he published the book
Chef in IG-Auschwitz with Anne Van Paemel as co-author. In 2022, he wrote the book
Diary 1933 about the danger of the
far-right emerging worldwide. In 2024, he published the book
KZ Syndrome: A Scar that Never Goes Away, with Henri Heimans as co-author, about two people who survived the
Nazi concentration camps in Ravensbrück, Auschwitz, Mauthausen, and Ebensee. In December 2025, he published an updated version of his
Diary 1933, which focused extensively on the undemocratic actions of
Donald Trump. ==Bibliography==