Theoretical resource of phenomenology

The establishment and development of phenomenology made use of two sorts of theoretical resource: psychology and aesthetics,which both played a crucial role in phenomenology motion.Husserl criticized psychologism in the logic study,extracted the Pure-phenomenology topics from psychology,and made them become discussing objects of philosophy as rigorous science.Lots of phenomenologist after Husserl got the opportunities of developing phenomenology from aesthetics activities such as literature and painting.,etc.Ultimately the epistemological theme turned into ontological one in phenomenological study.