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“Every chemical compound, according to Engels, comes into existence only at a certain time in the development of the universe when the conditions are appropriate for it; and when it does come into existence it manifests this by entering into its characteristic relations. Neither carbon compounds or proteins are ideal forms, but are themselves witnesses of the conditions on a cooling planet. It is here that occurs his celebrated remark that life is the mode of existence of proteins.” — J.D. Bernal
Every chemical compound, according to Engels, comes into existence only at a certain time in the development of the universe when the conditions are appropriate for it; and when it does come into existence it manifests this by entering into its characteristic relations. Neither carbon compounds or proteins are ideal forms, but are themselves witnesses of the conditions on a cooling planet. It is here that occurs his celebrated remark that life is the mode of existence of proteins.