作為一位當代最受注目的美國原住民作家，席爾柯卻不曾畫地自限，僅為自己的印地安同胞和少數民族而寫作。相反的，在意識到自身也是地球村一員的同時，席爾柯更關心人類現今所面對的共同問題。席爾柯認為，當今社會所面臨的問題(如人們的疏離、無歸屬感)以及與人類生存相關的生態環境問題，追根究底，皆起因於當今人類不斷地漠視自身與他人及自然的關係。 如同本論文題幹「天人之際」所點出，人與人之間以及人與自然之間的關係是席爾柯急欲探討的問題，此問題也反映在作者的作品當中。副題幹中的「疏離觀」所指的是種身處於大千世界卻察覺不到自身與世間一景一物牽連的生活方式，而「整體觀」乃是種與「疏離觀」孑然不同的態度。「整體觀」的精神在於，自覺個人為整體的一部分，能清楚明白的意識到個人只是人類的一份子，而人類也只不過是自然的一部分罷了。在《儀式》這本小說中，主角「塔由」是整個世界的縮影。藉由討論主角的病症，現代世界所面臨的問題，也呈現了出來。論文的第二章著眼於主角塔由與人及自然的病態關係。塔由之所以痛苦是因為他無從建立與人及自然適當的關係。論文的第三章則更進一步探討塔由的病因。在《儀式》中，「巫術」是一切苦痛災難的根源，代表著席爾柯概念中的「疏離觀」。最後論文的第四章，討論主角塔由如何從他的治療之旅，重新學習「整體觀」的處世之道，從中復元。藉由此三章的討論，席爾柯的中心思想逐漸明晰：唯有人類開始意識到自身只是大千世界的一份子，當今社會環境的問題，才可能有解決的一天。

　　Though regarded as the best known Native American writer, Leslie Marmon Silko never limits her writing as Native American works. Considering herself a member of the global community, Silko pays much attention to the “world issue” instead of only to the Native American ones. For Silko, the disasters and the unhappiness that human beings have nowadays, such as the environmental problems or the sense of not belonging, result from the same cause: they are blind to their relationships toward people and nature. As the title suggests, this thesis illustrates Silko’s main concern in her writing: Relationships. In the subtitle, the word “Alienation” refers to a perspective from which human beings see no connection between themselves and the world. On the other hand, “Wholeness” is an opposite perspective through which human beings are aware of their relation to the rest of the world, that is, one as part of humanity and humanity as part of nature. In Ceremony, Tayo is the microcosm of the world. To discuss his illness is to discuss the world’s. In Chapter Two, I will argue that Tayo is sick because he loses the ability to establish a proper relationship to the world. In Chapter Three I will discuss the root cause of his sickness: the witchery, which is also a synonym for alienation. Chapter Four is to portray Tayo’s healing journey, from which he learns a new perspective to re-see the world. Silko’s message in Ceremony emerges from these discussions: It is only when human beings begin to view themselves as part of the whole that the problems they have nowadays could gradually be solved.

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