singleness of heart

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See: loyalty
References in classic literature ?
But those who take an interest in this tale, will be glad to learn that the BROTHERS CHEERYBLE live; that their liberal charity, their singleness of heart, their noble nature, and their unbounded benevolence, are no creations of the Author's brain; but are prompting every day (and oftenest by stealth) some munificent and generous deed in that town of which they are the pride and honour.
But if the whole population had had him in their minds, and had wished his life to be spared, not one among them could have done so with a purer zeal or greater singleness of heart than the good locksmith.
He and I never had any kind of difference from first to last neither in camp nor council, but in singleness of heart and purpose we advised the Argives how all might be ordered for the best.
As a great wave that comes thundering in at the mouth of some heaven-born river, and the rocks that jut into the sea ring with the roar of the breakers that beat and buffet them--even with such a roar did the Trojans come on; but the Achaeans in singleness of heart stood firm about the son of Menoetius, and fenced him with their bronze shields.
He was at this period of his life, too, largely given to taking people for what they gave themselves out to be; but his singleness of heart, fearlessness, and honesty were just what East appreciated, and thus the two had been drawn into great intimacy.
In his great work on Turner, Modern Painters, Ruskin had advised young artists to "go to Nature in all singleness of heart .
A parallel thinker - but not a member of the Brotherhood - was John Ruskin (1819-1900) who wrote in Modern Painters (1843): "Go to Nature in all singleness of heart and walk with her laboriously and trustingly.
Without true proof and knowledge of a friend, 355 Sincere in singleness of heart, adventers