254 OPERATIONS SUBSIDIARY TO INDUCTION. 



meaning had been expressed by putting together a number 

 of other names, that particular combination of words already 

 in common use for other purposes would have had nothing to 

 make itself remembered by. If we want to render a par- 

 ticular combination of ideas permanent in the mind, there is 

 nothing which clenches it like a name specially devoted to 

 express it. If mathematicians had been obliged to speak 

 of " that to which a quantity, in increasing or diminishing, 

 is always approaching nearer, so that the difference becomes 

 less than any assignable quantity, but to which it never 

 becomes exactly equal," instead of expressing all this by the 

 simple phrase, " the limit of a quantity," we should probably 

 have long remained without most of the important truths 

 which have been discovered by means of the relation between 

 quantities of various kinds and their limits. If instead of 

 speaking of momentum, it had been necessary to say, " the 

 product of the number of units of velocity in the velocity by 

 the number of units of mass in the mass," many of the dyna- 

 mical truths now apprehended by means of this complex 

 idea would probably have escaped notice, for want of recalling 

 the idea itself with sufficient readiness and familiarity. And 

 on subjects less remote from the topics of popular discussion, 

 whoever wishes to draw attention to some new or unfamiliar 

 distinction among things, will find no way so sure as to 

 invent or select suitable names for the express purpose of 

 marking it. 



A volume devoted to explaining what the writer means 

 by civilization, does not raise so vivid a conception of it 

 as the single expression, that Civilization is a different thing 

 from Cultivation ; the compactness of that brief designation 

 for the contrasted quality being an equivalent for a long 

 discussion. So, if we would impress forcibly upon the 

 understanding and memory the distinction between the two 

 different conceptions of a representative government, we 

 cannot more effectually do so than by saying that Delegation 

 is not ^Representation. Hardly any original thoughts on 

 mental or social subjects ever make their way among man- 

 kind, or assume their proper importance in the minds even of 



