In a report to Theodor Herzl, a founder of Zionism and the World Zionist Organization
written prior to their Second Zionist Congress convened in 1898, Leo Motzkin his secretary, wrote, "Completely accurate statistics about the number of inhabitants do not presently exist. One must admit that the density of the population does not give the visitor much cause for cheer. In whole stretches throughout the land one constantly comes across large Arab villages, and it is an established fact that the most fertile areas of our
(emphasis mine) country are occupied by Arabs..." (Protocol of the Second Zionist Congress, Pg. 103).
Various Zionists parrot these ideas, like Rabel's example.