The area and range of the liberal arts evolved in time. Originally, most of the teaching, and all of the text-books, would have been in Latin, the language the students would have learnt at school before they came to college. In the beginning the courses were aimed at educating the elite in the classical works. Eventually, the meaning of "liberal arts" got extended to include both humanities and science. But even today, practical activities as agriculture, business, engineering, pedagogy or pharmacy are excluded from the liberal arts. The liberal professions include only professions which require education at university, mainly law and medicine.