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About this quote

What does it mean?
Russell says he has sought evidence that humans are rational but has not found it despite extensive searching.
In plain terms
He admits he can't find proof that people are rational.
What can you take from it?
Human rationality is not empirically guaranteed.

Where it applies

  • psychology
  • anthropology

Putting it to work

  • challenge assumptions of rationality
  • collect data on decision making

Questions to consider

  • Is rationality a myth or a rare trait?
  • How do we measure rational behavior?

Another view

His personal search may not reflect broader evidence.

More from Bertrand Russell

  1. Pragmatists explained that Truth is what it pays to believe. Historians of morals reduced the Good to a matter of tribal custom. Beauty was abolished by artist…

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  2. As soon as we abandon our own reason, and are content to rely upon authority, there is no end to our troubles.

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  3. Admiration of the proletariat, like that of dams, power stations, and aeroplanes, is part of the ideology of the machine age.

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