“This universe is not an ideal universe. It is impossible, without more fundamental revision of its character than human beings can ever hope to effect, to make of it an ideal place, or anything like an ideal place, for the satisfaction of desires. The cosmic processes which have evolved conscious beings on the earth—and these processes are but the hard-headed tendencies of matter—have so hopelessly nuptialed pleasure and pain that it is impossible to believe that fumbling philosophy will ever be able to divorce them. But we are here, useless and mysterious as it may seem, a set of incompatible vagrants, orphaned here on a dervish-like lump of something, in the midst of immensities so hard and arrogant that no wail from our worm-like larynxes can aught avail. And, so far as we can make out, it is the program of things that we are to remain here. We can not lie down peacefully and perish, for we are possessed by an instinct lashing us to live.”

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Appendix C: The System vs. The View of the Oxford Essayists, p.407

2009, Nobel Prize acceptance speech (December 2009)
Context: We do not have to think that human nature is perfect for us to still believe that the human condition can be perfected. We do not have to live in an idealized world to still reach for those ideals that will make it a better place. The non-violence practiced by men like Gandhi and King may not have been practical or possible in every circumstance, but the love that they preached — their fundamental faith in human progress — that must always be the North Star that guides us on our journey.
For if we lose that faith — if we dismiss it as silly or naïve; if we divorce it from the decisions that we make on issues of war and peace — then we lose what's best about humanity. We lose our sense of possibility. We lose our moral compass.
Like generations have before us, we must reject that future. As Dr. King said at this occasion so many years ago, "I refuse to accept despair as the final response to the ambiguities of history. I refuse to accept the idea that the 'isness' of man's present condition makes him morally incapable of reaching up for the eternal 'oughtness' that forever confronts him."
Let us reach for the world that ought to be — that spark of the divine that still stirs within each of our souls.

Source: The New Ethics (1907), The Survival of the Strenuous, p. 167

Source: Marius the Epicurean http://www.gutenberg.org/dirs/etext03/8mrs110.txt (1885), Ch. 25

Introduction (1971)
The Golden Notebook (1962)
Context: Ideally, what should be said to every child, repeatedly, throughout his or her school life is something like this:
"You are in the process of being indoctrinated. We have not yet evolved a system of education that is not a system of indoctrination. We are sorry, but it is the best we can do. What you are being taught here is an amalgam of current prejudice and the choices of this particular culture. The slightest look at history will show how impermanent these must be. You are being taught by people who have been able to accommodate themselves to a regime of thought laid down by their predecessors. It is a self-perpetuating system. Those of you who are more robust and individual than others will be encouraged to leave and find ways of educating yourself — educating your own judgements. Those that stay must remember, always, and all the time, that they are being moulded and patterned to fit into the narrow and particular needs of this particular society."

Source: The Next Development in Man (1948), p. 261-262

2014, Address to European Youth (March 2014)
Context: None of us can know for certain what the coming days will bring in Ukraine, but I am confident that eventually those voices -- those voices for human dignity and opportunity and individual rights and rule of law -- those voices ultimately will triumph. I believe that over the long haul, as nations that are free, as free people, the future is ours. I believe this not because I’m naïve, and I believe this not because of the strength of our arms or the size of our economies, I believe this because these ideals that we affirm are true; these ideals are universal.

No. VII, Its Supposed Checks and Balances, p. 250
From SHAKESPEARE: THE INDIVIDUAL, quote attributed to Bagehot says: "The greatest pleasure in life is doing what other people say you cannot do."
The English Constitution (1867)