Wear your knowledge like your watch - in you pocket - and don't pull it out just for show.
Lord ChesterfieldObserve it, the vulgar often laugh, but never smile, whereas well-bred people often smile, and seldom or never laugh. A witty thing never excited laughter, it pleases only the mind and never distorts the countenance.
Lord ChesterfieldAn ignorant man is insignificant and contemptible; nobody cares for his company, and he can just be said to live, and that is all.
Lord Chesterfield