“We have failed to bring justice. We cannot build the future on injustice.”

1960s, Memorial Day speech (1963)
Context: The law cannot save those who deny it but neither can the law serve any who do not use it. The history of injustice and inequality is a history of disuse of the law. Law has not failed — and is not failing. We as a nation have failed ourselves by not trusting the law and by not using the law to gain sooner the ends of justice which law alone serves. If the white over-estimates what he has done for the Negro without the law, the Negro may under-estimate what he is doing and can do for himself with the law.

Excerpts from a speech to the Fiji Institute of Accountants, 28 April 2005

In p. 139.
Quote, Thought Leaders

"The Future is What We Choose to Make", World Maker Faire, New York (September 2013) http://fora.tv/2013/09/21/the_future_is_what_we_choose_to_make
Context: We want to make things. We want to make things with our hands. We crave it. It sparks something in us, feeds our urge to create. That's why were here.
The future will be what we choose to build. We choose to build what we believe in. It's always been that way. A small group of people choose to believe in something, and then they make it so. In that order. They choose to believe in something, and then they make it so. That's the power of makers — the power to choose a new future, by believing, and making.

1960, The New Frontier
Context: For the harsh facts of the matter are that we stand on this frontier at a turning-point in history. We must prove all over again whether this nation — or any nation so conceived — can long endure — whether our society — with its freedom of choice, its breadth of opportunity, its range of alternatives — can compete with the single-minded advance of the Communist system. Can a nation organized and governed such as ours endure? That is the real question. Have we the nerve and the will? Can we carry through in an age where we will witness not only new breakthroughs in weapons of destruction — but also a race for mastery of the sky and the rain, the ocean and the tides, the far side of space and the inside of men's minds? Are we up to the task — are we equal to the challenge? Are we willing to match the Russian sacrifice of the present for the future — or must we sacrifice our future in order to enjoy the present? That is the question of the New Frontier. That is the choice our nation must make — a choice that lies not merely between two men or two parties, but between the public interest and private comfort — between national greatness and national decline — between the fresh air of progress and the stale, dank atmosphere of "normalcy" — between determined dedication and creeping mediocrity. All mankind waits upon our decision. A whole world looks to see what we will do. We cannot fail their trust, we cannot fail to try.

Coding theorems for a discrete source with a fidelity criterion. IRE International Convention Records, volume 7, pp. 142--163, 1959.
Context: This duality can be pursued further and is related to a duality between past and future and the notions of control and knowledge. Thus we may have knowledge of the past but cannot control it; we may control the future but have no knowledge of it.