a true wilderness, something he spoke of in his essay "Nature", published in 1836. He said, "in the wilderness I find something more dear and connate than in streets or villages". Civil War years Emerson was staunchly opposed to slavery, but he did not appreciate being in the public limelight and was hesitant about lecturing on the subject. In the years leading up to the Civil War, he did give a number of lectures, however, beginning as early as November 1837. A number of his friends and family members were more active abolitionists than he, at first, but from 1844 on he more actively opposed slavery. He gave a number of speeches and lectures, and welcomed John Brown to his home during Brown's visits to Concord. He voted for Abraham Lincoln in 1860, but was disappointed that Lincoln was more concerned about preserving the Union than eliminating slavery outright. Once the American Civil War broke out, Emerson made it clear that he believed in immediate emancipation of the slaves. Around this time, in 1860, Emerson published The Conduct of Life, his seventh collection of essays. It "grappled with some of the thorniest issues of the moment," and "his experience in the abolition ranks is a telling influence in his conclusions." In these essays Emerson strongly embraced the idea of war as a means of national rebirth: "Civil war, national bankruptcy, or revolution, [are] more rich in the central tones than languid years of prosperity." Emerson visited Washington, D.C, at the end of January 1862. He gave a public lecture at the Smithsonian on January 31, 1862, and declared:, "The South calls slavery an institution ... I call it destitution ... Emancipation is the demand of civilization". The next day, February 1, his friend Charles Sumner took him to meet Lincoln at the White House. Lincoln was familiar with Emerson's work, having previously seen him lecture. Emerson's misgivings about Lincoln began to soften after this meeting. In 1865, he spoke at a memorial service held for Lincoln in Concord: "Old as history is, and manifold as are its tragedies, I doubt if any death has caused so much pain as this has caused, or will have caused, on its announcement." Emerson also met a number of high-ranking government officials, including Salmon P. Chase, the secretary of the treasury; Edward Bates, the attorney general; Edwin M. Stanton, the secretary of war; Gideon