Our instinct may be to see the impossibility of tracking everything down as frustrating, dispiriting, perhaps even appalling, but it can just as well be viewed as almost unbearably exciting. We live on a planet that has a more or less infinite capacity to surprise. What reasoning person could possibly want it any other way?

A popular perception that political news is boring is no minor issue; for when news fails to harness the curiosity and attention of a mass audience through its presentational techniques, a society becomes dangerously unable to grapple with its own dilemmas and therefore to marshal the popular will to change and improve itself.

I think I'm more curious than I used to be - curious about why people live like they do and how they make sense of their time... Do they see how the sun has made it like a champion around the world overnight, and that all day today we get another chance to be brave, to exercise our humanity with boldness and deft precision?

Fresh from the rarefied environments of Harvard, the author says he purposefully took journalism jobs in small southern towns so that he could learn the art of conversation with ordinary people. Is this gift for listening and for conversation, it seems, that allowed him to produce textured historical narratives of grand impact.

The complexities of adult life get in the way of the truth. The great philosophers have always been able to clear away the complexities and see simple distinctions - simple once they are stated, vastly difficult before. If we are to follow them we too must be childishly simple in our questions - and maturely wise in our replies.

The author perceptively outlines what might be an underrated aspect of his subject and of many others whose public achievements are of note – a "gift for friendship". McCullough says Adams, despite his towering intellect and curmudgeonly demeanor, had a soft heart for other people and a genuine interest in their particulars.

For Jefferson, William and Mary was largely about what university life is supposed to be about: reading books, enjoying the company of like-minded, and savoring teachers who seemed to be ambassadors from other, richer, writer worlds. Jefferson believed Williamsburg "the finest school of manners and morals that ever existed in America.

Inventory:"Four be the things I am wiser to know:Idleness, sorrow, a friend, and a foe.Four be the things I'd been better without:Love, curiosity, freckles, and doubt.Three be the things I shall never attain:Envy, content, and sufficient champagne.Three be the things I shall have till I die:Laughter and hope and a sock in the eye.

Books were her refuge. Having set herself to learn the Russian language, she read every Russian book she could find. But French was the language she preferred, and she read French books indiscriminately, picking up whatever her ladies-in-waiting happened to be reading. She always kept a book in her room and carried another in her pocket.

Children, be curious. Nothing is worse (I know it) than when curiosity stops. Nothing is more repressive than the repression of curiosity. Curiosity begets love. It weds us to the world. It's part of our perverse, madcap love for this impossible planet we inhabit. People die when curiosity goes. People have to find out, people have to know.

How quickly we grow accustomed to wonders. I am reminded of the Isaac Asimov story "Nightfall," about the planet where the stars were visible only once in a thousand years. So awesome was the sight that it drove people mad. We who can see the stars every night glance up casually at the cosmos and then quickly down again, searching for a Dairy Queen.

Human spirit is the ability to face the uncertainty of the future with curiosity and optimism. It is the belief that problems can be solved, differences resolved. It is a type of confidence. And it is fragile. It can be blackened by fear, and superstition. By the year 2050, when the conflict began, the world had fallen upon fearful, superstitious times.

I suspect that scientists are driven by the sense that the world out there - reality - contains a hidden order, and the scientist is trying to elucidate the hidden order in our reality. And that impulse is what the scientist shares with the mystic. The impulse to get to the bottom of things. To know how the world really works. To know the nature of things.

He wants to see, he wants to know, only to see and know. I'm aware that it is this mentality, this curiosity, which is responsible for the hydrogen bomb and the imminent demise of civilization and that we would all be better off if we were still at the stone-worshipping stage. Though surely it is not this affable inquisitiveness that should be blamed.

Whereas Taft discouraged the young Yale student from extracurricular reading, fearful it would detract from required courses, Roosevelt read widely yet managed to stand near the top of his class. The breath of his numerous interests allowed him to draw on knowledge across various disciplines, from zoology in philosophy and religion, from poetry and drama to history and politics.