Teaching is the only major occupation of man for which we have not yet developed tools that make an average person capable of competence and performance. In teaching we rely on the 'naturals,' the ones who somehow know how to teach.
Peter DruckerInside an organization there are only cost centers. The only profit center is a customer whose check has not bounced.
Peter DruckerWe all have a vast number of areas in which we have no talent or skill and little chance of becoming even mediocre. In those areas a knowledge workers should not take on work, jobs and assignments. It takes far more energy to improve from incompetence to mediocrity than it takes to improve from first-rate performance to excellence.
Peter Drucker