Train employees well enough they could get another job， but treat them well enough so they never want to.
把你的员工训练到可以让他们找到另一份工作的水平，但同时也要善待他们，这样他们就永远不会想去找另一份工作。
To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.
