Can someone me summaries this? i been reading it so many time and i haven't understand it.

from the conditions of frontier life came intellectual traits of profound importance. the work of travelers along each frontier from colonial days onward describe certain common traits, and these traits have, while softening down, still persisted as survivals in the place of their origin, even when a higher social organization succeeded. the result is that to the frontier the american intellect owes its striking characteristics. that coarseness and strength combined with acuteness and acquisitiveness; that practical, inventive turn of mind, quick to find expedients; that masterful grasp of material things, lacking in the artistic but powerful to effect great ends; that restless, nervous energy; that dominant individualism, working for good and for evil, and withal that buoyancy and exuberance which comes with freedom—these are traits of the frontier, or traits called out elsewhere because of the existence of the frontier. (frederick jackson turner, “the significance of the frontier in american history,” the frontier in american history (new york: henry holt and company, 1920), 37.)