It suggests that environmental ethics education can revise personal rationality and points out the education been vigorously carried out and promoted both by colleges and our society to set a good environmental ethics atmosphere and a new idea of harmonious soci.

The "prisoner dilemma" shows the internal difficulties of both collective and individual rationality based on the concept of economic homo.

Public rationality is a concept that originated from politics and expanded to other sociological disciplines,but it is different from individual reason and not absolute rationality,or post-modern non-rationality.

The Prisoner s Dilemma demonstrates the relation between individual reason and collective reason, reflects the duality of our existence——reality and possibility, and plies that philosophy whether can transcend existence or not in the field of reason.

In this paper,a metho d for im-age-based individual face modeling generation system is presented.