Concentration is the key to economic results. No other principles of effectiveness is violated as constantly today as the basic principle of concentration. – Peter Drucker
When a subject becomes totally obsolete we make it a required course. – Peter Drucker
Suppliers and especially manufacturers have market power because they have information about a product or a service that the customer does not and cannot have, and does not need if he can trust the brand. This explains the profitability of brands. – Peter Drucker
Quality in a product or service is not what the supplier puts in. It is what the customer gets out and is willing to pay for. A product is not quality because it is hard to make and costs a lot of money, as manufacturers typically believe. – Peter Drucker