In GATTACA, what does the phrase "There is no gene for the human spirit" imply?

The phrase "There is no gene for the human spirit" suggests that while genetics can influence certain traits and abilities, it does not encapsulate the entirety of what defines a person. This statement emphasizes the notion that attributes such as determination, resilience, and creativity — often associated with the human spirit — transcend genetic predispositions. It implies that success and human potential are not solely dictated by one's genetic makeup, but rather by individual choices, experiences, and intrinsic qualities that cannot be measured or determined by DNA alone. This statement underscores a central theme of GATTACA, where characters strive to overcome societal expectations linked to their genetic origins, reinforcing the idea that the essence of being human is more complex than one's genetic profile.