Source identified1
“Let us have faith that right makes might.”
Lincoln reverses the idea that power establishes right, arguing that moral judgment should guide sustained political action rather than treating strength or intimidation as proof of justice.
Source note: Cooper Union Address, February 27, 1860, closing passage. Lincoln is defending Republican opposition to the extension of slavery into federal territories; the line retains that antislavery political context.
Source identified2
“Let us stand by our duty, fearlessly and effectively.”
Once a moral and political conclusion has been reached, Lincoln argues that intimidation and evasive compromise should not displace the duty that follows from that judgment.
Source note: Cooper Union Address, February 27, 1860. The sentence appears in Lincoln’s closing argument about opposing slavery’s spread and should not be detached into a context-free command about every disputed duty.