人们容易将“个体”(τóδετι)与“个体事物”(τàκαθ’εκαστα)混淆在一起,从而用对个体事物的探讨代替了对个体本质的探讨。本文认为,个体与个体事物,是必须保持严格区别的两个概念。个体本质是一事物区别于其他事物的本质、形式的依据。而个体事物是可感的、偶性的、具有质料的存在。没有前者,后者就不能作为一个确定的东西得以存在,而没有后者,前者也就不能够作为一个具体的东西得以呈现。 It is easy to confuse “individual” (τóδετι) with “individual thing” (τàκαθ’εκαστα), so as to replace the discussion of the essence of the individual with the exploration of individual things. This article argues that individual and individual things are two concepts that must be strictly distinguished. The essence of an individual is the essence of a thing different from other things, the basis of the form. The individual things are sensible, occasional, with the existence of the material. Without the former, the latter can not exist as a definite thing, but without the latter, the former can not be presented as a concrete thing.