THE LAW OF HEREDITY 87 



ing a supposed journey to other planets, asked us 

 to imagine a race of beings presenting two visible 

 forms — a corporeal and a spiritual — as inseparable as 

 the Siamese twins. To the student of heredity men 

 and women wear something of this aspect. They 

 walk double ; their moral natures are distinct from 

 their physical. Very often their component parts 

 may correspond, but in not a few cases also they are 

 dissimilar, a fine physical nature being accompanied 

 by a dwarfish or deformed moral nature, and vice 

 versd. Could we all see each other in this double 

 character, how different would be our judgment of 

 our friends and acquaintances ! The man standing 

 high in ofiice or in the world's esteem might appear 

 a moral pigmy, while another, obscure and un- 

 considered, might be conspicuous as a moral athlete. 

 Just as the faculties of the body may be cultivated, 

 so unquestionably may those of the mind. Therein 

 lies the value of education, example, and all the other 

 influences that are recognised as beneficial to youth. 

 But the capacity for moral improvement is limited 

 by heredity to a degree little suspected as yet by 

 the majority of mankind, and undreamt of by great 

 thinkers of the past like Bentham, Locke, or Hume. 



