He was a student of Socrates and from what I understand virtually everything he wrote was taken from the speaking of his teacher. This leads to questions over how much we can trust just how close a trancription he took. On the other hand, what has been left to history reads as clean conversation.
According to A.N. Whitehead:
The safest general characterization of the European philosophical tradition
is that it consists of a series of footnotes to Plato. I do not mean the
systematic scheme of thought which scholars have doubtfully extracted from his
writings. I allude to the wealth of general ideas scattered through them.
So keep in mind that this is a biggie here.