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Period: 469 BCE to 399 BCE
Socrates
"He who is not contented with what he has, will not be contented with what he would like to have."
Socrates wondered if it was true when people could do something wrong even when they knew what was right. He believed that people only did wrong when they thought that the perceived benefits weighed more. Hence he said no one commits an evil crime knowingly. -
Period: 428 BCE to 348 BCE
Plato
"Good actions give strength to ourselves and inspire good actions in others."
In Plato's ethical philosophy, he challenges ones' interpretation of living a good life. He disagrees that living good and being happy stems from shallow things, such as money and fancy. He thinks that being virtuous is the only way to live a good life for it gives you the moral values of justice, generosity, etc. and makes life worth living. -
Period: 384 to 322
Aristotle
"At his best, man is noblest of all animals separated from law and justice he is the worst."
This means that in order to be happy, we must live life moderately. As an example, it is safe to ingest a chocolate bar, but it is unsafe and risky to one's health to eat more than 5 bars. In life, we must avoid doing extremes.