The first four treasures can be observed by every human being. The fifth treasure is observed by enlightened beings. Enlightenment is described in a similar manner by mystics of all religions. Philosophy also covers psychology, but for practical reasons the application of psychological theories in psycho-therapy is being dealt with as a separate topic. From the above listing it appears that philosophy is concerned with finding answers to basic questions.
Philosophy has a very long history.
It dates back to the origins of the Arab, Chinese, Greek, Indian, and Persian civilizations. At present, almost every university in the world has a Department of Philosophy. In a number of Western countries, individual professional philosophers can now also make money in freelance work. They are in demand as consultants for management and long term planning by large industrial and service companies. Almost everybody else .