The natural instinct of man, as of other animals, is to investigate every stranger of his species, with a view to deciding whether to behave to him in a friendly or hostile manner.
 Bertrand Russell, The Conquest of Happiness (1930). copy citation

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Author Bertrand Russell
Source The Conquest of Happiness
Topic instinct species
Date 1930
Language English
Reference
Note
Weblink http://russell-j.com/beginner/COH-TEXT.HTM

Context

“In the first place, all through working hours, and still more in the time spent between work and home, the urban worker is exposed to noise, most of which, it is true, he learns not to hear consciously, but which none the less wears him out, all the more owing to the subconscious effort involved in not hearing it. Another thing which causes fatigue without our being aware of it is the constant presence of strangers. The natural instinct of man, as of other animals, is to investigate every stranger of his species, with a view to deciding whether to behave to him in a friendly or hostile manner. This instinct has to be inhibited by those who travel in the underground in the rush-hour, and the result of inhibiting it is that they feel a general diffused rage against all the strangers with whom they are brought into this involuntary contact.” source