In The Republic, as recorded by Plato, a teacher named Thrasymachus argues with a philosopher named Socrates that justice is the advantage of the stronger. Later, he declares that a person who is good at their job, for example a good teacher, will exhibit both knowledge and care for the person they assist. These statements are contradicting. A good, strong teacher would show care for his students, and refrain from taking advantage of them. Thrasymachus’s definition of justice cannot be true if his statement of a good teacher is true. One statement must be false. However, Socrates does more. Although Socrates logically shuts down Thrasymachus’s argument by proving the statements contradict, he also attacks the man’s ethics as a teacher which
