For the convenience of readers, and in order to convey his experience of studying Western philosophy, especially ancient Greek philosophy, to readers, the editor-in-chief of the complete collection, Mr. Miao Litian, has compiled and selected the "Selected Works of Aristotle" with annotations (including volumes on metaphysics, ethics and politics, published in 1999-2000). Over the past few years, readers, especially college and graduate students, have been reporting the need for separate volumes of Aristotle's works. In order to meet the needs of these readers, we have published Aristotle's most influential works ("On Instruments", "Physics", "Metaphysics", "Nicomachean Ethics", "Politics" and "Rhetoric·Alexander's Rhetoric·On Poetry") in the form of single volumes.