international peace conference took place there between 4 and 11 October 1919. Present at the conference were Leon Revoyne, Mathilda Wrede, Leonard Ragaz, Pierre Ceresole, as well as Hodgkin and Schultze. Boeke and Ceresole became the secretaries of this movement, which initially called itself "Christian International", later the International Fellowship of Reconciliation. Together with Helene Stöcker, and Wilfred Wellock, they founded the Service Civil International and in 1921 "Paco" (the Esperanto word for peace), which in 1923 became War Resisters' International (WRI). Kees and Betty Boeke considered war to be rooted in the entanglement of the state and capitalism. As Betty was a Cadbury, she inherited large shares in her family's firm. She renounced her wealth, transferring this money to various charitable organizations such as the Quaker-Help Organisation in Russia in 1920. Later, she gave the shares to a trust for the workers of the Cadbury factory. For a while, the Boekes abstained from using money, so as to avoid contributing to the state — since public funds are also spent on weapons. They never used public transport, nor did they pay postage, tolls, or taxes. As a result, they were imprisoned several times. On one occasion the Dutch tax authorities auctioned off the estate in order to recover taxes. Queen Wilhelmina was in attendance at the auction, and purchased Kees' favorite violin, only to return it to him on the spot. Boeke supported his family by working in Utrecht in a building association which he had founded; he did not work as an architect (which was his training), but as a simple worker. In the late 1920s Boeke increasingly withdrew from international peace movements. Believing he could build a better society through educating children, he started a school called "De werkplaats" (the workshop). He founded his school in 1926 when all private schools, including the Montessori school his children attended, started receiving an equal amount of money per child from the state, to which he objected. His school, which uses Maria Montessori's methods, extended by Boeke's own educational ideas, became nationally known; even the Dutch queen Juliana sent her daughters there. The school has been hugely influential for its creative way of making the students co-responsible for their own curriculum, together with the teachers; many students who failed in regular schools have blossomed at "De werkplaats", but on the other hand many talented children could not reach a high