The correct assumption is that what individuals have learned by age twenty-one will begin to become obsolete five to ten years later and will have to be replaced-or at least refurbished-by new learning, new skills, new knowledge.
Peter DruckerA business enterprise must continue beyond the lifetime of the individual or of the generation to be capable of producing its contributions to economy and to society.
Peter DruckerThe person who will make the greatest contribution to a company is the mature person-and you cannot have maturity if you have no life or interest outside the job.
Peter Drucker