The great mystery isn't that people do things badly but that they occasionally do a few things well. The only thing that is universal is incompetence. Strength is always specific! Nobody ever commented, for example, that the great violinist Jascha Heifetz probably couldn't play the trumpet very well.
Peter DruckerYet there is nothing more dangerous than to be premature in exploiting a change in perception.
Peter DruckerNo institution can possibly survive if it needs geniuses or supermen to manage it. It must be organized in such a way as to be able to get along under a leadership composed of average human beings.
Peter DruckerMost people think they know what they are good at. They are usually wrong... And yet, a person can perform only from strength.
Peter DruckerThe most probable assumption is that no currently working 'business theory' will be valid 10 years hence.
Peter Drucker