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R. H. Tawney
Richard Henry Tawney (30 November 1880 – 16 January 1962) was an English economic historian, social critic, ethical socialist, Christian socialist, and important proponent of adult education. The Oxford Companion to British History (1997) explained that Tawney made a "significant impact" in these "interrelated roles". A. L. Rowse goes further by insisting that "Tawney exercised the widest influence of any historian of his time, politically, socially and, above all, educationally".
Source: Wikipedia