He goes on in a letter in spring 1862 the war still isn't a war against slavery in any official sense and he writes home to his brother saying he wishes he had the, quote, "Moral courage to desert," because he no longer wants to serve this cause.

在1862年春天的信中,从政治角度来说,那还不是真正意义上的反奴战争,他写信给他哥哥说,他希望有点"道德气节",因为他不想再为这理由继续下去

耶鲁公开课 - 美国内战与重建课程节选