Introduction Ⅰ.Ursula K.Le Guin's Life and Works Ⅱ.A Brief Survey of Le Guin Criticism Ⅲ.Science Fiction and Fantasy: Literary Genres Ⅳ.The Theoretical Frame and Structure Chapter One The Interplay of Yin and Yang 1.1 Taoism,Feminism and Science Fiction 1.1.1 Taoism and Feminism 1.1.2 Feminist Science Fiction 1.2 The Elimination of Gender Boundary: from Feminism to Androgyny 1.2.1 An Awakened Woman in The Eye of the Heron 1.2.2 Woman's Coming of Age in Earthsea Series 1.2.3 Androgyny in The Left Hand of Darkness Chapter Two The Interrelativity of Being and Non—Being 2.1 Taoism and Utopianism 2.1.1 The Taoist Utopian Thoughts 2.1.2 The Dream and Ambiguity of Utopia 2.1.3 Utopian Literature and Science Fiction 2.2 The Dispossessed: Thought—Experiment of Taoism Chapter Three The Harmony of Human and Nature 3.1 Taoism and Ecologism 3.1.1 Ecological Consciousness in Taoism 3.1.2 Ecocriticism in Literature 3.2 Towards Harmony 3.2.1 Dream and Reality: The Lathe of I—Ieaven 3.2.2 Human and Other Species: Buffalo Gals and Other Animal Presences 3.2.3 Future History: Always Coming Home Chapter Four Le Guin's Quest for Tao 4.1 Le Guin's Involvement with Tao 4.2 In Search of Tao 4.2.1 Le Guin's English Version of Tao Te Ching 4.2.2 Major Taoist Concepts in Le Guin's Understanding Conclusion Works Cited Acknowledgments 后记