Mein Weltbild, Amsterdam: Querido Verlag, 1934.
"I am absolutely convinced that no wealth in the world can help humanity forward, even in the hands of the most devoted worker in this cause.
The example of great and pure individuals is the only thing that can lead us to noble thoughts and deeds.
Money only appeals to selfishness and irresistibly invites abuse.
Can anyone imagine Moses, Jesus, or Gandhi armed with them money-bags of Carnegie?"