Historian Geoffrey Foote has highlighted Tawney's "political shifts": "From an endorsement of a radical Guild socialism in 1921 through his authorship of the gradualist "Labour & the Nation" in 1928, his savage attacks on gradualism in the 1930s to his endorsement of revisionism in the 1950s". Nevertheless, the same author also argues that "Tawney's importance lies in his ability to propose a malleable yet coherent socialist philosophy which transcends any particular political situation. In this sense, his mature political thought never really changed".