There may be fairies at the bottom of the garden. There is no evidence for it but you can't prove that there aren't any so shouldn't we be agnostic with respect to fairies?
There is overwhelming evidence that the higher the level of self-esteem the more likely one will be to treat others with respect kindness and generosity.
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We reserve our deepest respect and admiration for those who volunteer for service and give their lives to help keep our nation secure.