The minimal state treats us as inviolate individuals, who may not be used in certain ways by others as means or tools or instruments or resources; it… - Robert Nozick

as a young man I thought the ideal philosophical argument was one with the following property: someone who understood its premises and did not accept its conclusion would die.

There are few books that set out what a mature person can believe - someone fully grown up, I mean. Aristotle's 'Ethics', Marcus Aurelius's 'Meditations', Montaigne's 'Essays', and the essays of Samuel Johnson come to mind. Even with these, we do not simply accept everything that is said. The author's voice is never our own, exactly; the author's life is never our own. It would be disconcerting, anyway, to find that another person holds precisely our views, responds with our particular sensibility, and thinks the same things important. Still, we gain from these books, weighing and pondering ourselves in their light. These books - and also some less evidently grown-up ones, Thoreau's 'Walden' and Nietzsche's writings, for example - invite or urge us to think along with them, branching in our own directions. We are not identical with the books we read, but neither would we be the same without them.

When I was 15 years old, or 16, I carried around on the streets of Brooklyn a paperback copy of Plato's Republic, front cover facing outward. I had read only some of it and understood less, but I was excited by it and knew it was something wonderful.