Final answer:
The fulfillment of the purpose/nature of man encompasses a variety of philosophical perspectives focusing on understanding and perfecting human nature, treating humans as ends in themselves, and appreciating intrinsic human desires such as beauty, love, and freedom.
Step-by-step explanation:
The question of what fulfills the whole purpose/nature of man is a philosophical one that has been debated throughout history. Philosophers such as Thomas Aquinas, Baruch Spinoza, and Immanuel Kant have offered varying perspectives on human flourishing and well-being. Aquinas posited that the goal of life is to become a perfect image of God, Spinoza suggested that people seek to increase and perfect their powers and capacities with joy being a catalyst to greater perfection, and Kant argued that humans should always be treated as ends in themselves within a rational moral framework.
Throughout the different philosophical discussions, a common theme is the pursuit of understanding human nature to determine what is good for humans. In examining human nature, there is a recognition of the inherent parts of humanity – reason, emotions, will, and the quest for knowledge and understanding as fundamental aspects of our being. The perfectibility of human nature and society is often discussed in the context of self-improvement and contributing to the well-being and happiness of others, as expressed in various historical texts and philosophical treatises.