THE COMMON-SENSE VIEW 151 



people. The latter he respects; the former he 

 looks upon as comrades and equals. He is not 

 merely inquisitive: he is greedy for knowledge. 

 He can draw conclusions, can reason from one 

 thing to another, and apply the results of experi- 

 ence to new circumstances. He is cunning, even 

 wily, has flashes of humour, indulges in practical 

 jokes, manifests moods, and is entertained in one 

 company and bored in another. He is self-willed 

 but not stubborn, good-natured but not wanting 

 in independence. He expresses his emotions like 

 a human being. In sickness he behaves like one 

 in despair, distorts his face, groans, stamps, and 

 tears his hair. He learns very easily whatever is 

 taught him, as, for instance, to sit upright at 

 table, to eat with knife and fork and spoon, to 

 drink from a glass or cup, to stir the sugar in his 

 tea, to use a napkin, to wear clothes, to sleep in 

 a bed, and so on. Exceedingly appreciative of 

 every caress, he is equally sensitive to blame and 

 unkindness. He is capable of deep gratitude, and 

 he expresses it by shaking hands or kissing with- 

 out being asked to do so. He behaves toward 

 infants with touching tenderness. The behaviour 

 of a sick and suffering chimpanzee is most pathetic. 

 Begging piteously, almost humanly, he looks into 

 his master's face, receives every attempt to help 

 him with warm thanks, and soon looks upon his 

 physician as a benefactor, holding out his arm to 

 him, stretching out his tongue whenever told, and 

 even doing so of his own accord after a few 

 visits from his physician. He swallows medicines 



