WHAT IS DARWINISM? 129 



gist who believes in vital, as distinguished 

 from physical forces ; but he holds to sponta- 

 neous generation, not, as he admits, because it 

 has been proved, but because the admission of 

 any higher power than nature is unscientific' 



It is inevitable that minds addicted to scien- 

 tific investigation should receive a strong bias 

 to undervalue any other kind of evidence ex- 

 cept that of the senses, i. e., scientific evidence. 

 We have seen that those who give themselves 

 up to this tendency come to deny God, to 

 deny mind, to deny even self. It is true that 

 the great majority of men, scientific as well as 

 others, are so much under the control of the 

 laws of their nature, that they cannot go to 

 this extreme. The tendenc}^, however, of a 

 mind addicted to the consideration of one kind 

 of evidence, to become more or less insensible 

 to other kinds of proof, is undeniable. Thus 

 even Agassiz, as a zoologist and simply on 

 zoological grounds, assumed that there were 

 several zones between the Ganges and the At- 

 lantic Ocean, each having its own flora and 

 fauna, and inhabited by races of men, the same 

 in kind, but of different origins. When told 

 by the comparative philologists that this was 



1 Goti und Na!ur, p. 200. 

 9 



