Some of them claim that the changes in the Roman Rite of Mass were made in order to make it acceptable to non-Catholics. French philosopher Jean Guitton said that Pope Paul VI's intention was to assimilate the Catholic liturgy to the Protestant: "The intention of Paul VI with regard to what is commonly called the Mass, was to reform the Catholic liturgy in such a way that it should almost coincide with the Protestant liturgy – but what is curious is that Paul VI did that to get as close as possible to the Protestant Lord's Supper, ... there was with Paul VI an ecumenical intention to remove, or at least to correct, or to relax, what was too Catholic, in the traditional sense, in the Mass and, I repeat, to get the Catholic Mass closer to the Calvinist Mass."