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I believe that I am right, and all the world else wrong r 

 although it will be thought that I have an " overweening con- 

 fidence in my own wisdom," which makes me "not admit that 

 such wonderful and well-established facts at once annihilate my 

 theory." 



I believe that I must be right, although I can't " pretend that 

 the facts given hi this chapter (.VII.) strengthen in any degree 

 my theory," and all I can say is that they do not " annihilate it;" 

 ergo I must be right. 



I believe that the sterility of hybrids is no disproof of my 

 theory of Natural Selection, which is that it acts for the good of 

 the creatures which exercise it, although it could not possibly be 

 of any advantage to the several animals, and although I think 

 that the importance of the fact has been " much underrated by 

 some writers." 



I believe that my theory of hybridism is right, although it does 

 not "go to the root of the matter " and " no explanation is 

 offered " of the main fact. " Ibrida quo pacto sit " is quite beyond 

 me, " not knowing can't say." 



I believe that "no part of the structure of any one species has 

 been formed for the exclusive good of another species," though 

 "Natural Selection" can and does often produce structures for 

 the direct injury of other species, and though I see that the 

 aphis voluntarily uses its structure for the sole good of the ants, 

 and I can only " probably " imagine that it is of any convenience 

 to the aphides themselves. 



I believe that tumbler-pigeons have been produced by the long 

 continued selection of such in many generations, though I can't 

 at all tell how they first came to have the habit, or why it should 

 have been fortunately noticed by some fancier, or how he came 

 to think that it might be propagated and preserved, and succeeded 

 in doing so. 



I believe that I strengthen my argument by saying that dogs 

 only rarely require, when young, to be taught not to attack sheep, 

 etc., though I see that it is the very commonest thing that some 

 dogs can never be broken off the habit, and there is not a dog in 

 existence but might be encouraged to it : I have no objection. 



