"The soul is made for action, and cannot rest till it be employed. Idleness is its rust. Unless it will up and think and taste and see, all is in vain."

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The mind is a vagrant thing ... Thinking is not analogous to a person working in a laboratory who invents something on company time. Answering criticism that the book for which he won a Pulitzer Prize was written in the years he had been employed at the Smithsonian. He specified that did not write on the premises there, but only at home outside of working hours.

— Daniel J. Boorstin