Your coarse impudence in making me a proposition to employ my sword in a civil war is simply incomprehensible. You insolent scoundrel! Do you realize it has never been dipped in American blood?
Source, in full
Response of a request by José de la Riva Agüero for support in a revolution against the Peruvian congress in 1823, as quoted in Captain of the Andes : The Life of José de San Martín, Liberator of Argentina, Chile and Peru (1943) by Margaret Hayne Harrison, p. 201