I profess…to fight for but one single purpose, viz, to sustain a Government capable of vindicating its just and rightful authority, independent of niggers, cotton, money, or any earthly interest. (Letter of October 10, 1863)

We must act with vindictive earnestness against the Sioux, even to the extermination, men, women and children….The more Indians we can kill this year, the less will have to be killed next year….They all have to be killed or be maintained as a species of paupers. (Quoted in “Citizen Sherman” by Michael Fellman)