He declares his privacy is temporary and justified, and promises to explain before the wedding. That is all that anyone knows for certain, but Mrs MacNab will tell you a great deal more than even she is certain of. You know how the tales grow like grass on such a patch of ignorance as that.
“If the devil tells you something is too fearful to look at, look at it. If he says something is too terrible to hear, hear it. If you think some truth unbearable, bear it.”