Leave enough time unscheduled; anyone in a decision-making position should, as a rule, schedule no more than half his time.
Peter Drucker · How to Be an Effective Executive, Nation's Business (1961)
Peter Drucker · How to Be an Effective Executive, Nation's Business (1961)
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Peter Drucker · The source reads: “The basic economic resource—the "means of production" to use the economist's term—is no longer capital, nor natural resources (the economist's "land"), nor "labor." It is and will be knowledge.” · Post-Capitalist Society (1993)

Peter Drucker · Post-Capitalist Society (1993)

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