A Smile

Sometimes your joy is the source of your smile, but sometimes your smile can be the source of your joy. — Thich Nhat Hanh

An interesting research on the link between the psychological and physical spheres was done on the effect of 'Smiling'.

It was a detailed experiment involving many groups of participants, and they found that smiling participants recovered more quickly from stress than those with neutral expressions, and those displaying Duchenne smiles ( an all teeth showing, crows feet under eyes smile) recovered somewhat more quickly than those displaying a standard smile.

I loved it. Whatever be the smile, duchenne or normal, real or virtual, I think a smile is warm, joyful, positive and pretty. Even this one :)