He that would run his company on visible figures alone will in time have neither company nor figures.

It is wrong to suppose that if you can’t measure it, you can’t manage it – a costly myth

Managers don't like giving appraisals, and employees don't like getting them. Perhaps they're not liked because both parties suspect what the evidence has proved for decades: Traditional performance appraisals don't work.

There is no economy in having one operation produce a part and another separate the good ones from the bad ones.

Knowledge is the key.

Quality is made in the board room. A worker can deliver lower quality, but she cannot deliver quality better than the system allow.

Manage the cause, not the result.