Abraham Lincoln critiques the notion that legislative compromises or historical documents can override fundamental moral truths. He argues that human conscience and moral convictions will persistently oppose the expansion of slavery, regardless of political agreements or historical contexts. Lincoln’s quote emphasizes his belief in the moral imperative to confront and abolish slavery, highlighting the resilience of human conscience in the face of injustice. It reflects his commitment to ethical principles and human rights in challenging societal norms and legal frameworks.