Since the Emancipation Proclamation made the eradication of slavery an explicit Union war goal, it linked support for the South to support for slavery. Public opinion in Britain would not tolerate support for slavery. As Henry Adams noted, "The Emancipation Proclamation has done more for us than all our former victories and all our diplomacy." In Italy, Giuseppe Garibaldi hailed Lincoln as "the heir of the aspirations of John Brown". On August 6, 1863, Garibaldi wrote to Lincoln: "Posterity will call you the great emancipator, a more enviable title than any crown could be, and greater than any merely mundane treasure".