There are many fields of philosophy. Metaphysics is a the study of reality. This is a very broad field of study which attempts to answer questions about the nature of reality, as well as reality itself. Since ancient times, philosophers have theorized on the nature of reality. The most notable of the ancient metaphysicians are Plato, Socrates and Aristotle. Descarte is a more modern metaphysician from the 17th century, known as the “Father of Modern Philosophy” (Jensen, 2009).
Socrates was born in Greece about 470 BC. His own philosophical pursuit was to uncover definitions, or truths. He was especially interested in moral dilemmas as well as justice. Socrates himself never published any works, but his student, Plato, published many dialogues between Socrates and various people. Oftentimes, Plato used the character of Socrates in the writings in conjunction with various figures to portray his own ideas, so it is difficult to tell exactly what Socrates believed (Jensen, 2009).
Plato was possibly one of the first philosophers to believe that taking a careful approach to a good philosophical method would produce unarguable results. Plato tackled a lot of the same problems that Socrates and pre-socratic philosophers did. He also dabbled in predominantly religious ideas, such as immortality of the soul. On this topic he argued that the soul was immortal on the grounds that it is presupposed to be imperishable. Again, borrowing from his teacher Socrates, Plato believed that potential knowledge exists within, but that one must be properly prompted in order for it to be revealed (Peterson, Hasker, Reichenbach, & Basinger, 1998). The potential knowledge is referred to as being and knowledge, the latter being subject to the former. The revealed truth is referred to as becoming and opinion, the latter being subject to the former (Jensen, 2009). This theory proves useful for tackling many philosophical and theological issues (Peterson et al., 1998).
Aristotle, like Plato, believed that all truth is derivative of reality. He differed from Plato in that he did not believe in infinite truth in the natural world, or at least did not define it the same way (Jensen, 2009). Aristotle believed that there was a potential infinite, but that potential infinite was determined relatively as the progression of the world adds or subtracts from the existing form of reality (Peterson et al., 1998). For instance: a table is a table, but it has potential to be a chair if it were taken apart and put together differently. Therefore, every table has a potential infinite of being a chair. A table is not necessarily a table. According to Aristotle, the unnatural or supernatural world is not subject to these restraints. Therefore God, being the source of everything natural, is not bound by definite infinite or potential infinite.
Descarte lived long after Socrates, Plato and Aristotle. He saw the conclusions of the great thinkers before him to be faulty. Descarte was a brilliant mathematician and scientist in addition to being a philosopher, so his natural course of action was to consider the absolutes as is done in science. Ancient philosophy is based on the senses and on assumptions about truths. Descarte found it more logical to work philosophy in an equation; like “geometrical method” (Jensen, 2009). The starting points of ancient philosophers were based on the senses, which are subjective.
Because of the subjective nature of ancient philosophy, Descarte began a method of systematic doubt in which he would throw out everything which could be doubted. His hope was to reveal one truth which could not be doubted to use as the starting point for his philosophy. After some time, he came up with, “I think, therefore I am” (Jensen, 2009, quoted from Principles of Philosophy). Using this starting point, Descarte then began to logically consider other problems. Eventually, he logically deduced that because he himself exists and thinks, for example, that it was proof for ‘God’ or a supernatural creator (Jensen, 2009).
The ancient philosophers were great thinkers indeed. They contributed in some way to every society and, in many ways, they still do so today. Descarte found fault in their methods, but was able to respect their theories. Descarte’s philosophies are in many ways the foundation of all modern philosophy.
References
Jensen, J. (2009). Questions that matter L. Miller, (Ed.). New York, NY: McGraw-Hill.
Peterson, M., Hasker, W., Reichenbach, B., & Basinger, D. (1998). Reason & religious belief. New York, NY: Oxford University Press.