This week will include Friday the 13th. Whatever you do on that day, don't walk under a ladder, cross paths with a black cat, or break a mirror! There's no telling what tragedy could result. What gives on this weird superstition? No, it doesn't have anything to do with the Knights Templar. Historically, 13 has long been considered an unlucky number. There also developed the idea of Friday being unlucky. Then Thomas Lawson combined them in his 1907 novel Friday the Thirteenth, and popular culture took over from there.

Luck, then, has become a fundamental necessity every Friday the 13th. But generally speaking, luck isn't a clear cut as it may initially seem. Is it real? There may be a certain randomness to the universe, but is the concept of "luck" the best way to describe it? Does it all shake out in the end? Someone that seems lucky in business could be incredibly unlucky in their personal lives. Is luck good? Does it encourage us to rely on something else, instead of on our own hard work? And if we have luck, can we ever really know it? Cormac McCarthy said, "You never know what worse luck your bad luck has saved you from." It almost makes it feel...unlucky.

Whether you're a believer in luck or not, here are 13 quotes to put it all in perspective this Friday the 13th:

  1. "The pull, the attraction of history, is in our human nature. What makes us tick? Why do we do what we do? How much is luck the deciding factor?" - David McCullough
  2. "Luck? I don't know anything about luck. I've never banked on it and I'm afraid of people who do. Luck to me is something else: Hard work - and realizing what is opportunity and what isn't." - Lucille Ball
  3. "Not many people have had as much bad luck as I have, but not many people have had as much good luck, either." - Tig Notaro
  4. "Luck, bad if not good, will always be with us. But it has a way of favoring the intelligent and showing its back to the stupid." - John Dewey
  5. "The worst cynicism: a belief in luck." - Joyce Carol Oates
  6. "The only good luck many great men ever had was being born with the ability and determination to overcome bad luck." - Channing Pollock
  7. "Here's the thing about don't know if it's good or bad until you have some perspective." - Alice Hoffman
  8. "My success was due to good luck, hard work, and support and advice from friends and mentors. But most importantly, it was dependent on me to keep trying after I have failed." - Mark Warner
  9. "I don't believe in luck. Not in golf, anyway. There are good bounces and bad bounces, sure, but the ball is round and so is the hole. If you find yourself in a position where you hope for luck to pull you through, you're in serious trouble." - Jack Nicklaus
  10. "Learn to recognize good luck when it's waving at you, hoping to get your attention." - Sally Koslow
  11. "Luck is a goddess not to be coerced and forcibly wooed by those who seek her favors. From such masterful spirits she turns away. But it happens sometimes that, if we put our hand in hers with the humble trust of a little child, she will have pity on us, and not fail us in our hour of need." - P.G. Wodehouse
  12. "Luck is what we make it, not what is thrust upon us. You've shown initiative and it has nothing to do with luck." - George Bellairs
  13. "Luck has nothing to do with it, because I have spent many, many hours, countless hours, on the court working for my one moment in time, not knowing when it would come." - Serena Williams