That's a quote from a character in the film Breaker Morant.
Lord Kitchener: Needless to say, the Germans couldn't give a damn about the Boers. The diamonds and gold of South Africa they're after.
Major Bolton: They lack our altruism, sir.
Lord Kitchener: Quite.
in spite of "The Banker's Paradox." It's a plausible story, untestable though as far as I can tell. Still it's at least a way it might have happened, or maybe not, who knows? :-)