As nearly all the newspapers of both parties had supported the war, they were loth to notice a book which placed the object of their encomiums in so unpleasant a light. But many private letters were received by Jay which showed him that he had the approval of the best minds. Joshua R. Giddings wrote: "Thanks be to Him who rules the destiny of nations that we have among us competent and faithful men who possess the moral courage to stand forth and chronicle, in the language of truth, the barbarities of which the nation is guilty. The history of this age will speak to those who come after facts which will cause our descendants to blush. Your 'Review of the Mexican War' is faithful and just.... In writing it you have performed a service to your country and to mankind infinitely greater than was ever performed by any military officer." "Every portion of it," wrote Charles Francis Adams, "commands my unqualified assent. That in the course of God's providence good may be ultimately educed out of evil is the only compensating reflection which we can draw from the observation of so much wrong. It may be that out of the very measures so wickedly devised to sustain a system of crime may come the means by which it will be overthrown. That your book will do great service in combining and perpetuating the evidence bearing upon this portion of American history, I do not for a moment doubt. It is my profound conviction that there never was a more wicked and unjustifiable war, promoted by one party and connived at by the other, than the late war with Mexico."