With regard to other thinkers who have occasionally raised this kind of issue...
With regard to other thinkers who have occasionally raised this kind of issue, it must be said that the origin of this idea is the change in legal and ethical values in different societies at different times, which has led them to believe in the relativity of ethics and law, and has led them to doubt or deny basic evaluative principles. The roots of such ideas may be found in explanations of the relativity of ethics and law. B.
Another group of philosophers considers evaluative propositions to express social values arising from the needs of people and their inner emotions, which change as they change; hence, they hold that ethical propositions are outside the realm of rational discussion based on certain, eternal and necessary principles. On this basis, the criteria for the truth and falsity of these propositions would be these same needs and inclinations which are the causes of their validity.
In reply, it must be said that undoubtedly all practical wisdom is related to the voluntary behavior of man, behavior originating from a kind of desire and inner inclination directed toward a specific goal and destination. On this basis, specific non-whatish concepts occur, and propositions are formed from them.
The role of practical wisdom, however, is to lead man as he is confronted with a choice among diverse desires and inclinations to the basic and lofty human goal, and it leads him toward happiness and desired perfection. Such a way does not often correspond with the desires of most people, who are bound to their animal desires, to worldly fleeting material pleasures. Rather it forces them to adjust their instinctual animal desires and to close their eyes to material worldly pleasures.
Therefore, if by people’s needs and inclinations we mean just individual and group needs, which are actually always in conflict and interfere with each other, and cause corruption and the decay of society, then this is something opposed to the basic goals of ethics and law.
If the meaning is the specific needs and lofty human inclinations which are latent in most people and are unactualized and dominated by animal desires and tendencies, this is not incompatible with constancy, eternity, universality and necessity. These kinds of propositions need not be dispelled from the realm of demonstrative knowledge.