But Lincoln felt all of this to be, not alone the law of God, but quite as truly the common and compelling affirmation of the human heart. This way and style of phrasing it found eloquent annunciation in that earliest and unanswerable address respecting slavery at Peoria in October of 1854, where were deeply laid and may still be seen the foundations of all his power and fame. In that address he said, "My faith in the proposition, that each man should do precisely as he pleases with all which is exclusively his own, lies at the foundation of the sense of justice there is in me." And upon that foundation he laid this cornerstone of social and civic order: "No man is good enough to govern another man without that other man's consent." To so invade the liberty of another man is "despotism." Such invasion is "founded in the selfishness of man's nature." "Opposition to it is founded in his sense of justice." "These principles are in eternal antagonism." When they collide, "shocks and throes and convulsions must ceaselessly follow." These sentiments of liberty are above repeal. Though you repeal all past history, "you cannot repeal human nature." Out of the "abundance of man's heart" "his mouth will continue to speak." And to demonstrate that this sentiment of liberty, this consciousness that human worth is sovereign, is a verity of human nature which even holders of slaves corroborate, he points to the over 400,000 free negroes then in the land. Their presence is proof that deep in all human hearts is a "sense of human justice and sympathy" continually attesting "that the poor negro has some natural right to himself, and that those who deny it and make merchandise of him deserve kickings, contempt and death." This irrepealable law of the human heart was a mighty rock of confidence in Lincoln's social and political faith. All men were made to be free, and entitled equally to a happy life; and of this divine endowment all men everywhere were well aware. Human nature is by its nature the birthplace and the home of liberty and hope. Especially serviceable for the purposes of this study upon Industrialism is the section in Lincoln's Message to Congress of December, 1861, dealing with what he calls our "popular institutions." With his eagle eye he discerns in the Southern insurrection an "approach of returning despotism." The assault upon the Union was proving itself, under his gaze, an attack upon "the first principles of popular government--the rights of the people." And against that assault he raised "a warning voice." In this warning he treats specifically the relation of labor and capital. In this discussion his motive is single and clear. He detects a danger that so-called labor may be assumed to be so inseparably bound up and indentured with capital as to be subject to capital in a sort of bondage; and that, once labor, whether slave or hired, is brought under that assumed subjection, that condition is "fixed for life."