What does greek philosophy teach about the human condition

Greek philosophy teaches that the human soul has a mental part and a spiritual part. The mental part is a completely rational entity while the spiritual part understands reason. The soul they say is home to the passions and desires. Living led by your reason is the best way to live combined with the heart of passion is essential for the human condition.

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.