• "I think I've always had a certain amount of skepticism of this whole 'shut up and smile' theory. I haven't ever swallowed that pill so easily, although I tried." - Amber Heard Tweet
• "Operationally, God is beginning to resemble not a ruler but the last fading smile of a cosmic Cheshire cat." - Julian Huxley Tweet
• "We sometimes laugh from ear to ear, but it would be impossible for a smile to be wider than the distance between our eyes." - Malcolm De Chazal Tweet
• "A game one of my sisters will play with me in my first year of being alive is called Good Baby, Bad Baby. This consists of being told I am a good baby until I smile and laugh, then being told I am a bad baby until I burst into tears. This training will stand me in good stead all through my life." - Ali Smith Tweet
• "Nothing you wear is more important than your smile." - Connie Stevens Tweet
• "Jessica Simpson is the youth ambassador for Operation Smile, and an episode of The Apprentice featured a team managing a charity concert she put on. Donald Trump came on stage and pledged a donation." - Roma Downey Tweet
• "People who keep stiff upper lips find that it's damn hard to smile." - Judith Guest Tweet
• "Anyone who has a continuous smile on his face conceals a toughness that is almost frightening." - Greta Garbo Tweet
• "Smiling is very important. If we are not able to smile, then the world will not have peace. It is not by going out for a demonstration against nuclear missiles that we can bring about peace. It is with our capacity of smiling, breathing, and being peace that we can make peace." - Nhat Hanh Tweet
• "Wrinkles will only go where the smiles have been." - Jimmy Buffett Tweet