Second, humans everywhere develop a variety of derivative needs and desires that reflect their social and cultural experiences as well as their genetic heritage. Because these experiences vary from society to society and among individuals within the same society, the nature and intensity of the needs also vary (1991, p. 23).
Third, the members of every society have the same basic physiological resources to use in satisfying their needs (1991, p. 23).
Fourth, humans are all dependent on the societal mode of life, especially during the formative years (1991, p. 24).
Fifth, as we have already seen, we humans have an immense capacity for learning and for modifying our behavior in response to what we learn (1991, p. 24).
Sixth, humans everywhere have the capacity to create and use symbols systems and cultures (1991, p. 25).
Seventh, humans have a highly developed awareness of self and an acute consciousness of their situation with respect to the rest of the world (1991, p. 25).
Eighth, our species'heritage includes powerful emotions and appetites inherited form remote prehuman ancestors (1991, p. 25).
Ninth, and finally, humans are powerfully motivated to put their own needs and desires ahead of those of others, especially when the stakes are high (1991, p. 25).