中文摘要：

人的形式是人的定义的前提。在人、天性及人性的关系中，人是天性及人性的载体，天性是人的肉体部分的属性，是人的生理学特征，而人性是人的灵魂部分的属性，是人的伦理学特征和道德属性。天性（humannaturality）是人的自然性或自然本性，它同人性（humannature）相对。天性是人与生俱来的自然特性。天性不是人所独有的，而是人同其它动物都拥有的特征。人性是人的道德属性，是一个伦理学概念。人性是人独有的，其他动物不能同人共有人性。人性不是天生的，而是后天获得的。天性可以遗传，但人性不能遗传。人性在特定的伦理环境中形成，在道德教诲中完善。现在有关历史上性善性恶的讨论，在大多数情况下都存在对人性概念的误读。我们需要给人、本能、自然性、天性和人性等概念进行正确定义，这样才能对它们有正确的理解，也才能真正理解什么是人性。

英文摘要：

Human form is the premise to define human beings. Amongst the relationships of man, human naturality and human nature, man is the carrier of the other two; and human naturality refers to the corporal property of human beings, which is man＇s biological feature; and human nature is the spiritual attribute of human beings, which is man＇s ethical and moral feature. Human naturality is the counterpart of human nature. Mankind is born with human naturality. It is not exclusive to man, but shared by other creatures. However, human nature is man＇s moral property, which is an ethical term. Human nature is only used to define human beings. Other creatures cannot have it. Moreover, human nature is acquired rather than innate. Human naturality can be inherited, but human nature has to be formed in a certain ethical environment, and perfected via moral teachings. The existing discussions on the issues of whether man is born good or evil show more or less misreading and misunderstanding of the definition of human nature. It is not until we clearly define the concepts of man, instinct, natuality, human naturality and human nature that we .are able to completely understand what human nature is.