A tart temper never mellows with age; and a sharp tongue is the only edged tool that grows keener with constant use. - Washington Irving
He who indulges habitually in the intoxicating pleasures of imagination, for the very reason that he reaps a greater pleasure than others, must resign himself to a keener pain, a more intolerable and utter prostration. - Robert Louis Stevenson
I confess to wincing every so often at a poorly chosen word, a mangled sentence, an expression of emotion that seems indulgent or overly practiced. I have the urge to cut the book by fifty pages or so, possessed as I am with a keener appreciation for brevity. - Barack Obama