Descartes, Kant, Husserl,

Under the postmodernism background, the author tries to survey the development of the western philosophy by connecting the development of the western traditional reasonable philosophy in itself with philosophical crises from self-reasonable angle, therefore, the author chooses some typical and marked philosopher's theories to discuss in the course of traditional reasonable philosophy, as follows the author collects the case of Socrates Descartes Kant and Hussel, meanwhile, adopts selfreason as the clue of their theories, concerns about their .philosophical ways contexts philosophical problems and philosophical trouble to reconception. Further to survey the western philosophy where and how to go. Even though we couldn't discard those ancient and lasting philosophical problems, we might as well survey the way of the predominant and traditional self-reasonable philosophy in return. Perhaps, we can get a lot of courage and confidence out of it to face up to the present philosophical crisis. On the other side, the thesis could be regarded as the critic of the traditional self-reasonable philosophy. In the other words, the author make an attempt at adopting the critical attitude of the self-reasonable philosophy to face up to the present philosophy trouble and crisis and made a little effort by myself.