I have, therefore, discussed this case, at some little but wholly insufficient length, in order to show the power of natural selection, and likewise because this is by far the most serious special difficulty which my theory has encountered.
Horrexegatik aztertu dut puntu hau luze samar, nahiz eta inola ere ez behar adinako hedapenaz, hautespen naturalaren ahala erakusteko asmoz eta, era berean, berau delako, alde handiaz, nire teoriak aurkitu duen zailtasun berezirik astunena.