“CHOOSING WELL IS DIFFICULT, AND MOST DECISIONS HAVE SEVERAL different dimensions.”

"The Great Contraction, 1929-1933" (1963), with Milton Friedman
A Monetary History of the United States (1963)

"The Great Contraction, 1929-1933" (1963), with Anna J. Schwartz
A Monetary History of the United States (1963)

2013, Cape Town University Address (June 2013)
Context: We always have the opportunity to choose our better history. We can always understand that most important decision -- the decision we make when we find our common humanity in one another. That’s always available to us, that choice. [... ] it can be heard in the confident voices of young people like you. It is that spirit, that innate longing for justice and equality, for freedom and solidarity -- that’s the spirit that can light the way forward. It's in you.

Source: Flatland: A Romance of Many Dimensions (1884), PART II: OTHER WORLDS, Chapter 22. How I Then Tried to Diffuse the Theory of Three Dimensions by Other Means, and of the Result
Context: I devoted several months in privacy to the composition of a treatise on the mysteries of Three Dimensions. Only, with the view of evading the Law, if possible, I spoke not of a physical Dimension, but of a Thoughtland whence, in theory, a Figure could look down upon Flatland and see simultaneously the insides of all things, and where it was possible that there might be supposed to exist a Figure environed, as it were, with six Squares, and containing eight terminal Points. But in writing this book I found myself sadly hampered by the impossibility of drawing such diagrams as were necessary for my purpose... my life was under a cloud. All pleasures palled upon me; all sights tantalized and tempted me to outspoken treason, because I could not but compare what I saw in Two Dimensions with what it really was if seen in Three, and could hardly refrain from making my comparisons aloud.' I neglected my clients and my own business to give myself to the contemplation of the mysteries which I had once beheld, yet which I could impart to no one, and found daily more difficult to reproduce even before my own mental vision.

1962, Address at Independence Hall
Context: The necessity for comity between the National Government and the several States is an indelible lesson of our long history. Because our system is designed to encourage both differences and dissent, because its checks and balances are designed to preserve the rights of the individual and the locality against preeminent central authority, you and I, Governors, recognize how dependent we both are, one upon the other, for the successful operation of our unique and happy form of government. Our system and our freedom permit the legislative to be pitted against the executive, the State against the Federal Government, the city against the countryside, party against party, interest against interest, all in competition or in contention one with another. Our task — your task in the State House and my task in the White House — is to weave from all these tangled threads a fabric of law and progress. We are not permitted the luxury of irresolution. Others may confine themselves to debate, discussion, and that ultimate luxury — free advice. Our responsibility is one of decision — for to govern is to choose.

Music, Mind, and Meaning (1981)
Context: What is the difference between merely knowing (or remembering, or memorizing) and understanding?... A thing or idea seems meaningful only when we have several different ways to represent it — different perspectives and different associations.... Then we can turn it around in our minds, so to speak: however it seems at the moment, we can see it another way and we never come to a full stop. In other words, we can 'think' about it. If there were only one way to represent this thing or idea, we would not call this representation thinking.

Source: Alcatraz Versus the Evil Librarians

The Shape of Things to Come: An Interview with Peter F. Drucker Leader to Leader, No. 1 (Summer 1996)
1990s and later