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1Science has to presume similar constructive (unifying) and destructive (dissolving) forces in the lifeless universe, in living bodies, and in mental life, though in different shapes.
2For practical purposes only we can, for the time being, propose a terminological revision in the drive-theory so as to reserve the term Trieb (drive) for psychological and the term 'force' or 'tendency' for the underlying somatic phenomena.