Kilroy J. Oldster said this quote
“ People exercise the freedom to present themselves from a vast array of precepts. The modern human mind can engage in reflective thought and selectively determine how to organize the elements of perception. We can consciously elect to depart from stereotypical behavior and transcend the heretofore-established biological behavioral preferences. People can elect to hold prejudices or not, can make rational or irrational decisions to engage in war or not, and can take deliberate steps to arrest destruction of the ecosystem or not. Holding ourselves in check by placing a brake upon the human propensity to strike out in instinctual behavior is a distinct human quality. Restraint from instant gratification of strong impulses represents a unique human behavior trait. By intentionally refraining from committing an instinctual action, humankind asserts its sovereignty from its biological constitution. Unbound from the limitations of its biological nature, a person can employ the mind to devise alternative behavioral choices and the results of numerous behavioral choices culminate to provide a person with a sophisticated definition of the self. ”