The philosophers were " seekers of wisdom" who tried to study the world in a systematic way. Believed people could understand the universe through logic and reason. The earliest group was known as sophists-men of wisdom. Their main concern was political and social success. Many were teachers who trained the children of the wealthy. Heraclitus ( ca . 540- ca. 480 BCE ): "One cannot step twice in the same river." His message was that reality is constantly changing, it's an on going process rather than a fixed and stable product. All reality is fleeting and impermanent. " The unapparent connection is more powerful than the apparent one."
Socrates (469-399-BC) Socrates, Ancient Greek, changed philosophy from a study of natural science to ethics and politics, but didn't write anything. The Socratic Method is a question and answer technique of studying which was designed to make people examine their beliefs. Socrates is famous for arguing that one