It is more from carelessness about truth than from intentionally lying that there is so much falsehood in the world.
To keep your secret is wisdom but to expect others to keep it is folly.
Tell the truth work hard and come to dinner on time.
It's great that people are basically spending their two weeks of vacation to come out and be with us in some weird part of the world. And I think we owe it to them to take 'em to some cool places.