The productive disciplines were the fine arts, applied arts, and engineering. Modern philosophers have grouped human knowledge using categories similar to Aristotle. Most agree that there are a number of core knowledges that are fundamental to the development of other knowledges. Domains of Knowledge Language is defined as the expression and communication of emotions or ideas between human beings by means of speech and hearing. Language consists of speaking, reading, and writing.
Language is far more than an area of study.
It is our primary means of communicating with each other. Logic is the science concerned with the principles of valid reasoning and correct inference, either deductive or inductive. Mathematics is the study of number, form, arrangement, and associated relationships, using literal, numerical, and operational symbols. These formal or global knowledges are the base for our intelligence and give humans the ability to learn secondary knowledge. Figure 1 shows some examples of secondary knowledges.