I just notice that Alvaro de Bazan is in the list. But Santa Cruz is already in the game! Also feels rather bad that the system has no place for (political) thinkers or sociologists in general (though sociologists tends to write stuffs so we can have them as writers). If there is such a category then we can lump Plato, Machiavelli, Locke, Hobbs, Rousseau, Spencer, Marx and the like in there. Anyway, proposing Emile Durkheim and Herbert Spencer as....probably writers or scientists.