"I think Operation Smile is in more than 22 countries, mostly Third World. It just happened that my schedule opened up at the time they were heading to Vietnam"

"If the world's a veil of tears, Smile till rainbows span it"

"First, I want to pay tribute to Diana myself. She was an exceptional and gifted human being. In good times and bad, she never lost her capacity to smile and laugh, nor to inspire others with her warmth and kindness. I admired and respected her - for her energy and commitment to others, and especially for her devotion to her two boys"

"Comedy, we may say, is society protecting itself - with a smile"

"A laugh is a smile that bursts"

"War is a game that is played with a smile. If you can't smile, grin. If you can't grin, keep out of the way till you can"

"The man who can smile when things go wrong has thought of someone else he can blame it on"

"Beauty comes from a life well lived. If you've lived well, your smile lines are in the right places, and your frown lines aren't too bad, what more do you need?"

"A smile abroad is often a scowl at home"

"Let us always meet each other with smile, for the smile is the beginning of love"

"It is spectacular. From about five minutes in, when we knew for sure that we were going to have the weather to go, the smile on my face just got bigger and bigger, and I was just beaming through the whole launch. I mean, it is just an amazing ride"