There's an old saying in Tennessee — I know it's in Texas, probably in Tennessee — that says, fool me once, shame on — shame on you. Fool me — you can't get fooled again.
One frequently only finds out how really beautiful a really beautiful woman is after considerable acquaintance with her; and the rule applies to Niagara Falls, to majestic mountains, and to mosques-especially to mosques.
If you have only one smile in you, give it to the people you love. Don't be surly at home, then go out in the street and start grinning 'Good morning' at total strangers.