The dog represents all that is best in man
Etienne Charlet

He never makes it his business to inquire whether you are in the right or wrong, never bothers to ask whether you are going up or down life's ladder, never asks whether you are rich or poor, silly or wise, sinner or saint. You are his pal. That is enough for him.
Jerome K. Jerome

One reason a dog can be such a comfort when you are feeling blue is that he doesnt try to find out why
Author Unknown