Punctuality … begins by understanding every deadline I may have for appointments, tasks, etc., and then acts to order life in a manner that allows me to meet those deadlines. (promptness)

“Strict punctuality is perhaps the cheapest virtue which can give force to an otherwise utterly insignificant character.”
  John F. Boyes
“If I have made an appointment with you, I owe you punctuality, I have no right to throw away your time, if I do my own..”
  Richard Cecil
American Poet
“Know the true value of time; snatch, seize, and enjoy every moment of it. No idleness, no delay, no procrastination; never put off till tomorrow what you can do today.”
  Lord Chesterfield
1694-1773, British Statesman, Author
“I could never think well of a man’s intellectual or moral character, if he was habitually unfaithful to his appointments.”
  Nathaniel Emmons
“Few things tend more to alienate friendship than a want of punctuality in our engagements. I have known the breach of a promise to dine or sup to break up more than one intimacy.”
  William Hazlitt
1778-1830, British Essayist
“Unfaithfulness in the keeping of an appointment is an act of clear dishonesty. You may as well borrow a person’s money as his time.”
  Horace Mann
1796-1859, American Educator
Punctuality is one of the cardinal business virtues: always insist on it in your subordinates.”
  Don Marquis
1878-1937, American Humorist, Journalist
“I owe all my success in life to having been always a quarter of an hour before my time.”
  Lord Nelson
“The while we keep a man waiting, he reflects on our shortcomings.”
  French Proverb
Sayings of French Origin
Punctuality is not only a duty, but is also a part of good manners; it is favorable to fortune, reputation, influence, and usefulness; a little attention and energy will form the habit, so as to make it easy and delightful.”
  Charles Simmons
“Better three hours too soon than a minute too late.”
  William Shakespeare
1564-1616, British Poet, Playwright, Actor
“I am a believer in punctuality though it makes me very lonely.”
  E. V. Verrall
“Better never than late.”
  George Bernard Shaw
1856-1950, Irish-born British Dramatist
“Tardiness often robs us opportunity, and the dispatch of our forces.”
  Niccolo Machiavelli
1469-1527, Italian Author, Statesman
Punctuality is the politeness of kings.”
  Louis XVII
1755-1824, King of France
Punctuality is the soul of business.”
  Thomas C. Haliburton
1796-1865, Canadian Jurist, Author