WHAT IS PHYSICAL LIFE 



all look alike both outside and in, though 

 one is to grow into an ox, the other into 

 a guinea pig, the other into an onion, and 

 the other, it may be, into a professor of 

 biology. Some powerful living things 

 which we have spoken of have not yet been 

 seen at all. Now it is not that scientists 

 underrate the senses, but knowing their 

 limitations they never allow them to con- 

 tradict reason, however sense-born incredu- 

 lity remains impatient of contradiction. 



But the despotism of incredulity is most 

 strikingly shown by the attitude of multi- 

 tudes on the subject of the existence of 

 mind. If only they could see mind, then 

 they would be sure of its real existence. 

 Every other evidence of mind, from an im- 

 posing cathedral to the equipments of a 

 great university, leaves them still in doubt 

 as to what mind is, including what their 

 own minds are. May it not be simply an 

 attribute of matter which we can see and 

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