人是一种有限的“理性存在”。理性的兴衰史是人们对于“人是什么”这个问题在近现代以及后现代得到较深刻回答的必然。哲学的三次人类学转向证明了这一点。理性的衰落渊于理性的绝对化 ,这种绝对性异化则在于资本主义生产方式。科学和理性在本质上具有“终极人文关怀精神” ,是一种充满人类理想和激情的并与人类自身发展、前途命运息息相关的。 Man is a limited “rational existence.” The history of the rise and fall of the reason is the inevitable necessity for people to get a deeper answer to the question “what is man” in modern and post-modern times. The three anthropological turn of philosophy prove this. The decline of reason, due to the absolute absurdity of reason, lies in the capitalist mode of production. In essence, science and rationality have the “ultimate spirit of humane care” and are full of human ideals and passions and are closely linked to the development of mankind and its future and destiny.