Eliyahu M. Goldratt

What to change? What to change to? How to cause the change?

A system is only as good as its constraints.

An hour lost at a bottleneck is an hour lost for the entire system.

The throughput of a system is the rate at which it generates money.

Every improvement can be measured.

If you don't know what to measure, you can't manage.

It is not enough to do your best; you must know what to do, and then do your best.

The more you try to optimize each part, the more you will sub-optimize the whole.

The goal is to make money.

There is no such thing as a problem without a solution.