Quote by Calvin Calverley
Those who can, do, those who can't teach; and those who can do neither, administer.
Summary
This quote suggests that individuals who possess the ability and talent to successfully accomplish tasks or goals are the ones who actively engage in their work ("do"). Conversely, those who lack the ability to actually do the work themselves resort to teaching, as a way to still contribute and share their knowledge and experience. Finally, those who cannot do or teach are left with the option of administration, which involves overseeing and managing the actions of others.