Eliyahu M. Goldratt quotes:

So this is the goal: To make money by increasing net profit, while simultaneously increasing return on investment, and simultaneously increasing cash flow.

Cost Accounting is enemy number one of productivity.

I say an hour lost at a bottleneck is an hour out of the entire system. I say an hour saved at a non-bottleneck is worthless. Bottlenecks govern both throughput and inventory.

If you don't manufacture a quality product all you've got at the end is a bunch of expensive mistakes.

Never let something important become urgent

An hour saved at the non-bottleneck is a mirage.

An expert is not someone who gives you the answer, it is someone who asks you the right question.

Tell me how you measure me, and I will tell you how I will behave

The goal is not to improve one measurement in isolation. The goal is to reduce operational expenses AND reduce inventories and increase throughput simultaneously.

If we reduce batch sizes by half, we also reduce by half the time it will take to process a batch. That means we reduce queue and wait by half as well. Reduce those by half, and we reduce by about half the total time parts spend in the plant. Reduce the time parts spend in the plant and our total lead time condenses. And with faster turn-around on orders, customers get their orders faster.