“We all KNOW better, but do we actually DO better?”

Source: Les Misérables

1850s, The House Divided speech (1858)
Context: If we could first know where we are, and whither we are tending, we could then better judge what to do, and how to do it. We are now far into the fifth year, since a policy was initiated, with the avowed object, and confident promise, of putting an end to slavery agitation. Under the operation of that policy, that agitation has not only, not ceased, but has constantly augmented. In my opinion, it will not cease, until a crisis shall have been reached, and passed.

1860s, Second State of the Union address (1862)
Context: I do not forget the gravity which should characterize a paper addressed to the Congress of the nation by the Chief Magistrate of the nation, nor do I forget that some of you are my seniors, nor that many of you have more experience than I in the conduct of public affairs. Yet I trust that in view of the great responsibility resting upon me you will perceive no want of respect to yourselves in any undue earnestness I may seem to display. Is it doubted, then, that the plan I propose, if adopted, would shorten the war, and thus lessen its expenditure of money and of blood? Is it doubted that it would restore the national authority and national prosperity and perpetuate both indefinitely? Is it doubted that we here — Congress and Executive can secure its adoption? Will not the good people respond to a united and earnest appeal from us? Can we, can they, by any other means so certainly or so speedily assure these vital objects? We can succeed only by concert. It is not "Can any of us imagine better?" but "Can we all do better?" Object whatsoever is possible, still the question recurs, "Can we do better?"

Source: Christianity and the Social Crisis (1907), Ch.2 The Social Aims of Jesus, p. 46

Source: Dark Days

Speech delivered on September 6, 1990, before the Annual Judicial Conference of the Second Circuit, quoted in Supreme Justice Speeches and Writings Thurgood Marshall. Edited by J. Clay Smith, Jr., 2002
Context: America must get to work. In the chilled climate in which we live, we must go against the prevailing winds. We must dissent from the indifference. We must dissent from the apathy. We must dissent from the fear, the hatred, and the mistrust. We must dissent from a nation that buried its head in the sand waiting in vain for the needs of its poor, its elderly, and its sick to disappear and just blow away. We must dissent from a government that has left its young without jobs, education, or hope. We must dissent from the poverty of vision and timeless absence of moral leadership. We must dissent, because America can do better, because America has no choice but to do better.

Source: We Should All Be Feminists