||The course starts with a series of lectures on ancient philosophy with an emphasis of thoughts presented by the Naturalistic philosophers who initiate our research interest in the Nature and our surroundings such as Thales, Parmenides, Heraclitus, and Democritus. By doing so we would learn the following important topics such as the basic matter of the universe, the problem of change, and atomism. We then shall move onto Greek philosophy with a particular look at the following philosophers: the Sophists, Socratics, Plato, and Aristotles. Afterwards, we will study the theories and accounts during the Hellenistic period such as Cynicism, Stoicism, Epicureanism, Neo-Platonism, and Mysticism. We then will turn to Medieval philosophy, followed by a close look at thoughts appeared in the Renaissance and Baroque era.