Most of the western world reverses Socrates as one of the fathers of philosophy. Born in 469 B.C., the man who introduced the concept that ‘virtue is knowledge’ actually wrote nothing. Most of what survives was recorded by his student, the philosopher Plato.
     Socrates served as a soldier in the Athenian army and fought bravely in three battles, but there is little evidence that he had a full-time job. In fact, it seems he spent most of his time arguing in the Agora (marketplace), followed by his faithful students. Those included the best and the worst of Classical Athens-from Plato and Euclid, the father of geometry, to the politician Alcibiadis and some of the hated 30 tyrants who briefly suspended Athenian democracy in 404 B.C.
     It was in fact his connection with some of the tyrants that gave his enemies a reason to bring Socrates to trial, accused of corrupting youth. In his Apology, or defense speech, as recorded by Plato, Socrates challenged his accusers in the style later described as Socratic Irony-meaning pretending ignorance. His judges sentenced him to death by poison, a sentence which he carried out by drinking a cup of hemlock.

According to this passage, Socrates considered a great philosopher by………..