Socrates!!

Sophists were people who were paid for teaching. Socrates was the principal character of philosophy. he enter to this sophists class and start to question about everything.
Socrates knew a lot, that he became inmediatly from student to teacher. he start to teach people that were interesting in what he knew. This is when he created the term Philosopher, that is the one who teaches not for money, only for love to knowledge.
Socrates used the dialog to teach in his classes, this was his way of teaching. Socrates was the master of argumentation. he could agurment everithing, and it can be wrong but his argumentes were very good.

For me Socrates was one of the most important characters of the history of philosophy because of his knowledge and also he made many contribution in it.