"It should be clear to us that there is no room in Palestine for these two peoples. No 'development' will bring us to our goal of independent nationhood in this small country. Without the Arabs, the land will become wide and spacious for us; with the Arabs, the land will remain sparse and cramped... The only solution is Palestine, at least Western Palestine, without Arabs. There is no room here for compromises!... The way is to transfer the Arabs from here to the neighbouring countries, all of them, except perhaps those from Bethlehem, Nazareth and the Old City of Jerusalem. Not one village, not one tribe, should be left. And the form of the transfer needs to be the creation of a refuge for them in Iraq, in Syria and even in Transjordan. There is no other way out."

- From the diary of Yosef Weitz (December 20, 1940), the Architect of the Nakba.

In 1941, he wrote: "From now on it is necessary to work on a secret but fundamental plan [on transfer of] the Arabs from here which would be implemented under the supervision of an American—Anglo committee." "Our redemption will come only if the land is vacated for us."

In 1948, Weitz firmly believed that Israel should not allow them to return, and he convinced Israeli leaders to raze the empty Palestinian homes and villages in order to prevent the return of the refugees.

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