Unaccustomed Earth

Just ran across an apropos quote from Nathaniel Hawthorne's The Custom-House:

"Human nature will not flourish, any more than a potato, if it be planted and replanted, for too long a series of generations, in the same worn-out soil. My children have had other birthplaces, and, so far as their fortunes may be within my control, shall strike their roots into unaccustomed earth."