Listen to customers and you will hear them. Look carefully at customers and you will see them. Do both and you will understand them.
To see like a customer, be like a customer.
First be effective and then be efficient.
Do what's right and you'll never go wrong.
Are people being the least you expect of them, or the best they expect themselves to be?
Always trust people and they may let you down. Always distrust people and you have let them down.