在冯契那里,人的本质的发展内在地包含四个方面:自在之物向为我之物的转化;本然界向事实界、可能界、价值界之间的转化;真、善、美的统一和发展;自由的发展和实现。它们共同体现了基于实践的本体论、认识论的统一基础上的本质和存在辩证的综合和统一。 In Feng Qi’s place, the development of human nature contains four aspects: the conversion of the thing in itself into the thing in itself; the transformation of the nature in the real world, the possible world and the value world; the true, the good and the beautiful Unification and development; development and realization of freedom. They embody the essence and existence of dialectical synthesis and unity based on the unity of practice ontology and epistemology.