As far as the advocacy of peace rests on material motives like economy and prosperity, it is the service of Mammon; and the bottom of the platform will drop out when Mammon thinks that war will pay better.

A. T. Mahan (1840-1914) American admiral, strategist, historian [Alfred Thayer Mahan]
(Attributed)
    (Source)

Attributed in William Ralph Inge, "The Indictment against Christianity" (1917), Outspoken Essays, ch. 10 (1919).