Sir, – Until I had to wear a mask in public, I did not realise how often I smiled at strangers and they at me, for various reasons – as a friendly gesture on the footpath, to acknowledge courtesy on the road, to show solidarity with the Irish weather, to show sympathy with cross toddlers.
What a beautiful, non-verbal mode of communication the smile is, and what a pity is it hidden when it is most needed. – Yours, etc,
GRÁINNE O’DONOVAN,
Dooradoyle,
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Limerick.