there will be a lot of talk on Darwin's theories or on the negation of the existence of the soul.". Anarcho-naturism Another important current, especially within French and Spanish individualist anarchist groups was naturism. Naturism promoted an ecological worldview, small ecovillages, and most prominently nudism as a way to avoid the artificiality of the industrial mass society of modernity. Naturist individualist anarchists saw the individual in his biological, physical and psychological aspects and avoided, and tried to eliminate, social determinations. An early influence in this vein was Henry David Thoreau and his famous book Walden Important promoters of this were Henri Zisly and Émile Gravelle who collaborated in La Nouvelle Humanité followed by Le Naturien, Le Sauvage, L'Ordre Naturel, & La Vie Naturelle. This relationship between anarchism and naturism was quite important at the end of the 1920s in Spain. "The linking role played by the 'Sol y Vida' group was very important. The goal of this group was to take trips and enjoy the open air. The Naturist athenaeum, 'Ecléctico', in Barcelona, was the base from which the activities of the group were launched. First Etica and then Iniciales, which began in 1929, were the publications of the group, which lasted until the Spanish Civil War. We must be aware that the naturist ideas expressed in them matched the desires that the libertarian youth had of breaking up with the conventions of the bourgeoisie of the time. That is what a young worker explained in a letter to 'Iniciales' He writes it under the odd pseudonym of 'silvestre del campo', (wild man in the country). "I find great pleasure in being naked in the woods, bathed in light and air, two natural elements we cannot do without. By shunning the humble garment of an exploited person, (garments which, in my opinion, are the result of all the laws devised to make our lives bitter), we feel there no others left but just the natural laws. Clothes mean slavery for some and tyranny for others. Only the naked man who rebels against all norms, stands for anarchism, devoid of the prejudices of outfit imposed by our money-oriented society."". "The relation between Anarchism and Naturism gives way to the Naturist Federation, in July 1928, and to the lV Spanish Naturist Congress, in September 1929, both supported by the Libertarian Movement. However, in the short term, the Naturist and Libertarian movements grew