上句见：Day232
The Story of Philosophy《哲学的故事》第1章Plato第3节III. The Preparation of Plato第7段第4句：

But this is the worst that we can say of him; after it is said, the Dialogues remain one of the priceless treasures of the world.9 The best of them, The Republic, is a complete treatise in itself, Plato reduced to a book; here we shall find his metaphysics, his theology, his ethics, his psychology, his pedagogy, his politics, his theory of art. Here we shall find problems reeking with modernity and contemporary savor: communism and socialism, feminism and birth-control and eugenics, Nietzschean problems of morality and aristocracy, Rouseauian problems of return to nature and libertarian education, Bergsonian élan vital and Freudian psychoanalysis — everything is here. It is a feast for the élite, served by an unstinting host. "Plato is philosophy, and philosophy Plato," says Emerson; and awards to The Republic the words of Omar about the Koran: "Burn the libraries, for their value is in this book."10
9The most important of the dialogues are: The Apology of Socrates, Crito, Phædo, The Symposium, Phædrus, Gorgias, Parmenides, and The Statesman. The most important parts of The Republic (references are to marginally-numbered sections, not to pages are 327-32, 336-77, 384-5, 392-426, 433-5, 441-76, 481-3, 512-20, 572-94. The best edition is Jowett's; the most convenient is in the Everyman Series. References are to The Republic unless otherwise stated.
10Representative Men, P.41
浙江大学译本： 这是一份由无限慷慨的主人呈献给诸位杰出人士的大餐。

解析

这句指出了《理想国》的受众，精英阶层。
1、 It is a feast for the élite, served by an unstinting host.
这是由慷慨的主人为各位精英准备的盛宴。
élite: 英语elite，the people who have the most wealth and status in a society, the most successful or powerful group of people精英的，杰出人物
That's where the children of the elite went to university.那是精英阶层的孩子上大学的地方。《英语词汇演变史》
unstinting: used to say that someone gives something (such as praise or support) in a very strong and generous way.慷慨的，大方的
But if he is rude about others, he is also unstinting about himself, berating himself as an absent father and - until Nicole - an unfaithful husband.但是，如果说他对别人粗鲁，那么他对自己也是毫不留情的 ，他斥责自己是个缺位的父亲，直到遇到妮可之前，他还是个不忠的丈夫。《卫报》

这是由慷慨的主人为各位精英准备的盛宴。