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The less sure managers are of their opinions, the more vigorously they defend them. Managers do not waste their time defending beliefs they hold strongly – they just assert them. Nor do they bother to refute what they strongly believe is false.

— Russell L. Ackoff

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More quotes by Russell L. Ackoff

When a business is bought, it is bought for its potential—for its future, not its past.

Re-Creating the Corporation (1999)

A mission statement should define the business that the organization wants to be in, not necessarily what it is in.

Re-Creating the Corporation (1999)

Over time, every way of thinking generates important problems that it cannot solve.

Re-Creating the Corporation (1999)

The only managers that have simple problems have simple minds.

Ackoff (2007)

The lower the rank of managers, the more they know about fewer things. The higher the rank of managers, the less they know about many things.

p. 2 cited in: Gregory H. Watson (2010)

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Quote text and notes from Wikiquote: Russell L. Ackoff (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.