“We can decide what we mean by things like 6 and +, but once we do, the results of expressions like 6 + 6 are beyond or control. Logic leaves us no choice. In that sense, math always involves both invention and discovery: we invent the concepts but discover their consequences. As we'll see in the coming chapters, in mathematics our freedom lies in the questions we ask—and in how we pursue them—but not in the answers awaiting us.”
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