We fear others, we need them and their sympathy. Affection is out of our reach. Love? Oh love, love, what a difficult impossible goal, its like pretending to climb the Everest being very old and lame, paralytic. Most humans believe they have found love, but what they have found is only sex with some crumbs of gratitude for the human from whom they have obtained access to physical intimacy.
So you wander around as a beggar tacitly demanding a smile. A smile sincere when you ask to buy a loaf of bread or a newspaper. Shopkeepers are the most apt people who can furnish a smile. It’s part of their trade. They are even mostly sincere.
You are supposed no to be able to interpret cues. As for me, a flaneur in search of smiles in the streets, I can distinguish counterfeit smiles. And live on sincere smiles.
Then there are animals. They don’t lie.
The only danger is not to receive the smile by some one from whom you expect it. For me it's an aggression. So there always some fear in your begging. Need-fear. You must thread lightly always.
Then there is the gravest danger of all: outright aggression (not physical). You must thread lightly and be vigilant.
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Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
--Samuel Beckett