He deplores that 'many rationally unjustifiable' things have been written in recent years - some by very reputable scientists - about the sacredness of natural ecological systems, their inherent stability and the danger of human interference with them'. What is 'rational' and what is 'sacred'? Is man the master of nature or its child? If it becomes 'economical' to synthesise food from inorganic materials - 'which is likely to happen sooner or later' - if we become independent of plants, the connection between topsoil and civilisation will be broken. Or will it? These questions suggest that
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