善恶原则论

无私利他是最高且偶尔善原则，它只应该且只可能指导每个人的偶尔行为；其作用是使每个人在自我利益与社会或他人利益发生冲突而不能两全时，能够无私利他、自我牺牲而不会损人利己。为己利他是基本且恒久善原则，它应该且能够指导每个人的恒久行为；其作用是使每个人在自我利益与社会或他人利益一致的情况下，能够为己利他而不致损人利己。单纯利己是最低且偶尔善原则，它也应该且只能指导每个人的偶尔行为，其作用在于使每个人在与社会和他人无直接利害关系的行为领域，能够单纯利己而不致纯粹害己。

On the principles of good and Evil

Unselfishness and altruism is the highest and ocassional principle of being good,which should only (and can only) guide the ocassional behavior of any individual.Its signigficance is manifested in the individuals'displaying altuistic and self-sacrificing spirit when personal benefit is at conflict with that of society or other fellow beings. To benefit oneself and others at once is the fundamental and perpetual principle of being good,which should and can guide the perpetual conducts of individuals. Its significcance is manifested in the individuals' displaying self-benefiting and altruistic spirit when personal benefit is in conformity with that of society or other fellow beings.To merely benefit oneself is the lowest and ocassional principle of being good, which should only and can only, guide the ocassional behavior of the individuals.Its significanec is manifested in the individuals' displaying mere self-benefiting and non-self-harming spirit when personal benefit is not at direct conflict with that of society or other fellow beings.