A liar will not be believed, even when he speaks the truth.
A false tale often betrays itself.
Appearances often are deceiving.
Pray do not grieve so; but go and take a stone, and place it in the hole, and fancy that the gold is still lying there. It will do you quite the same service; for when the gold was there, you had it not, as you did not make the slightest use of it.