begin with our own.................

 

There is much of mankind that a man can only learn from himself.  Behind every man's external life, which he leads in company, there is another which he leads alone, and which he carries with him apart. We see but one aspect of our neighbor, as we see but one side of the moon; in either case there is also a dark half, which is unknown to us.  We all come down to dinner, but each has a room to himself.  And if we would study the internal life of others, it seems essential that we should begin with our own.

-Walter Bagehot