Philip Dormer Stanhope, Earl of Chesterfield 
Letters to His Son on the Art of Becoming a Man of the World and a Gentleman, 1753-54 [EPUB ebook] 

pub One.info present you this new edition. MY DEAR FRIEND: It is now above a fortnight since I have received a letter from you. I hope, however, that you are well, but engrossed by the business of Lord Albemarle’s 'bureau’ in the mornings, and by business of a genteeler nature in the evenings; for I willingly give up my own satisfaction to your improvement, either in business or manners.