本文旨在Frey動物倫理的研究，全文將依循Frey從「人與動物之差異」到「人的生命價值高於動物」之動物倫理的研究進路，深入探究Frey證成「人的生命價值高於動物」之關鍵的動物倫理觀點。 Frey的動物倫理，在理論的建構上，以偏好效益主義為基礎，強調人與動物的差異之處，並以「生命的豐富度」作為衡量生命價值之標準，使其主張之「人的生命價值高於動物」的觀點得以證成；在現實的應用上，則是允許肉食及改善後的工廠化農場，甚至為了人類重大的利益，動物實驗也會被允許。此一「反平等」的動物倫理學說，雖非主流，但仍舊提供了一種獨特的動物倫理觀點。 ;This thesis aims to research on R.G. Frey’s animal ethics. The content is based on his animal ethics, from “the difference between human and animal” to “human’s value of life is higher than that of animal” as the approach in order to sought in-depth on how Frey’s critical argument – “human’s value of life is higher than that of animal” is justified. Theoretically, Frey’s animal ethics is grounded on preference utilitarianism which empasises the difference between human and animal. He adopts a criterion of “richness in life” to weigh the value of life so as justifying the viewpoint that “human’s value of life is higher than that of animal”. Practically, based on such perspective, carnivore and improved factorial farm will be permissible. Animal research will also be allowed for maximizing utilities for the sake of human. Such “anti-equality” animal ethics, though is not mainstream, provides a unique animal ethics viewpoint.
