All models are wrong, but some are useful.

To find out what happens to a system when you interfere with it you have to interfere with it (not just passively observe it).

The business of the statistician is to catalyze the scientific learning process.

The old-fashioned idea of a good manager is one who is supposed to know all the answers, can solve every problem himself, and can give appropriate orders to his subordinates to carry out his plans... A good modern manager is like a good coach who leads and encourages his team in never-ending quality improvement.

The management system which makes only a pretense of valuing employee involvement and encouraging employee empowerment merely breeds cynicism.

The only way to know how a complex system will behave-after you modify it-is to modify it and see how it behaves.

Statisticians, like artists, have the bad habit of falling in love with their models.