"The human organism inherits so delicate an adjustment to climate that, in spite of man's boasted ability to live anywhere, the strain of the frozen North eliminates the more nervous and active types of mind"

This quote by Ellsworth Huntington recommends that humans are not as versatile as they might believe. He recommends that the human organism is so finely tuned to climate that it can be difficult for some people to get used to extreme climates. He specifically points out the frozen North, suggesting that the severe cold can be too much for some individuals, especially those with more active and worried minds. This quote suggests that people are not as efficient in adapting to extreme climates as they may think, and that the pressure of the cold can be too much for some people. Huntington's quote suggests that humans ought to be aware of their restrictions when it comes to adapting to extreme environments, which they must be mindful of the possible pressure that severe environments can have on their mind and bodies.